Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b939c36e287f38…

MALICIOUS

PDF

63.3 KB Created: 2020-10-27 13:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ac8d111af356ac1c2d596fe9791bc2fd SHA-1: e763b32b7caa2ea2b277de7e7258b00b9225dd29 SHA-256: c0b939c36e287f38a78761425cadb3fc27d5b7a00a0bffb85266c0241db8f69e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to disposable hosting services. The primary link redirects to a URL associated with known malicious infrastructure, suggesting a lure to download potentially unwanted or malicious software. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=download+monster+legends+mod+apk+new+version In PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/zixukexinufijalifi.pdfIn PDF document text
    • https://xebivonejawaf.weebly.com/uploads/1/3/4/0/134096192/werodexiponi.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/d1ee3c84.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://mojipidu.weebly.com/uploads/1/3/4/3/134391160/pipoxuja_xaripegigan_kutipotumemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5f95c066e5edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384050/normal_5f920b48a7ef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_5f947a9d9976e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f8a05f396bd8.pdfIn PDF document text
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/431470.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/5184748.pdfIn PDF document text
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/ropoforabejude_buvusulipir_tujubitodave_gulovalubeb.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/6196064.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cf6dfbe-af90-43b4-96e0-b04060d8cab3/crock_pot_slow_cooker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dd60874-8dd4-4d1c-855d-9146cff4ad32/zirotoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fa6ed1-913e-4352-b519-77c450d14d33/bolipajumam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65ca7c0e-09b4-45c6-b769-5ac40c792a47/30971343081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6468/8292/files/dinuxatezakiwesano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5542/2369/files/bitmap_to_base64_android_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2911/4275/files/50882761934.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off00007be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE9 3092 bytes
SHA-256: 5458808cd9538621fafb0df5684a1d4a8c29ac5d931903f117965f6f8b643a64
font_02_sfnt_off000086d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D4 5492 bytes
SHA-256: f2f7d6adc20f5587f296c6ab715e017f5f4d76afadd03d433bead7d6f51f41cb
font_03_sfnt_off00009980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9980 5040 bytes
SHA-256: 0f173f5f852e2d8c7c0794471786d806fe497069fe5aa841600e7dcc37b07f60
font_04_sfnt_off0000a749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA749 11784 bytes
SHA-256: 99762956cc132c52f78ec754bd97f3cb59983b7d92ea85790c28e79cd7454872
font_05_sfnt_off0000ce6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6B 16324 bytes
SHA-256: 17e1fa7fa3e8b70d30fd4118da47c6036e99e1f44a2acc1a9567aeaed1641d87
font_06_sfnt_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 1736 bytes
SHA-256: 74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d

Open this report in the interactive analyzer, or submit your own file for analysis.