Malicious PDF — malware analysis report

Static analysis result for SHA-256 27657aa64d03623d…

MALICIOUS

PDF

37.8 KB Created: 2020-11-09 13:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 6a2b03b78fb26672af7aeaef9aefaef0 SHA-1: 44eec4be116f1353ee1c40c311805734a6864297 SHA-256: 27657aa64d03623d08ce8e023bfbc57f8cb5a006be2e710dec5c68d99db2030a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'alf insurance lansing michigan' and a URL, suggesting a phishing or redirection attempt. The presence of multiple external PDF links further indicates a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/wb?keyword=alf%20insurance%20lansing%20michigan In PDF document text
    • https://jefapijuwenumik.weebly.com/uploads/1/3/4/4/134435530/lodutoketa.pdfIn PDF document text
    • https://zexafufu.weebly.com/uploads/1/3/4/5/134510694/532085.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403806/normal_5f9f0a7c1c904.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409627/normal_5fa0d0220fc90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416301/normal_5f9b2d50b1f6b.pdfIn PDF document text
    • https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/limovoda-giwadirev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5f87a104bf7fd.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/gemamikezafozat_rixurumomez_puvupog_gupidejukoni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_5f9e5d0b9ae99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1abd7b7d-df6e-4734-9a0d-820730682c01/is_it_love_drogo_mod_apk_unlimited_energy_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/multiples_worksheet.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D5 4976 bytes
SHA-256: 677b40cf2ee091fbfdd5da43d0208d44d7cda2353d4cf880a31a90991784c3ce
font_01_sfnt_off00005880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5880 10784 bytes
SHA-256: ed45cee8d24e003bd6cfcfb2f80a7be28b9cf4eeec2ff578c2ffeeefacc0bdc8
font_02_sfnt_off00007ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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