Malicious PDF — malware analysis report

Static analysis result for SHA-256 f705d057b1421069…

MALICIOUS

PDF

69.1 KB Created: 2020-12-19 15:35:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07fdc7e53d3c471ddab32544f23d534f SHA-1: 7d838152acf2190d338cdc765d465ad7fade8e99 SHA-256: f705d057b14210694cdd5837cdfe6ff19236b4b21a22b6beb94475c6c4ee2e89
214 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is 'https://gettraff.ru/aws?utm_term=solubility+rules+and+net+ionic+equations+answers', which is likely used to direct users to phishing or malware download sites. No scripts were extracted, but the PDF structure itself is designed to host numerous links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/aws?utm_term=solubility+rules+and+net+ionic+equations+answers
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/feluzoxusuta-faginabavulow-rekegivi-demiloboxikuxu.pdf
    • https://kefanizitadibuz.weebly.com/uploads/1/3/4/3/134328212/vamelumiboki.pdf
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/72c494473b25e0.pdf
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/nizofamixebarupa.pdf
    • https://wotutokope.weebly.com/uploads/1/3/5/3/135315373/tokabo_makiveges.pdf
    • https://vureduvo.weebly.com/uploads/1/3/4/5/134513064/tigokox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc562cd24b06a7eb31d7f51/t/5fd15e64871f8c6e594dd3f7/1607556710380/51451123097.pdf
    • https://static1.squarespace.com/static/5fc5213960f2895dc10339a8/t/5fd66dfb267c8d0ace48cda5/1607888379853/rage_italic_font.pdf
    • https://s3.amazonaws.com/pevuwarobuvowa/android_studio_emulator_charles_proxy.pdf
    • https://static1.squarespace.com/static/5fc0d7ac403f5353fd956fc5/t/5fc23750e6d49a06bbdc203a/1606563664680/84043344342.pdf
    • https://s3.amazonaws.com/susonanezaj/latest_itunes_for_windows_7.pdf
    • https://static1.squarespace.com/static/5fcdedf089ef447dc9d1d86e/t/5fcf8d283fa051062b4bdb8d/1607437609976/plant_vs_zombies_mod_apk_download_for_pc.pdf
    • https://static1.squarespace.com/static/5fdc9c274a508b35dd5dc321/t/5fdca1049d30181faffe18ea/1608294660726/google_sheets_calendar_reminders.pdf
    • https://static1.squarespace.com/static/5fc0f169085bf90c0efd4cbb/t/5fc11cd95147b148045b59eb/1606491353488/los_extraterrestres_otra_dimension.pdf
    • https://static1.squarespace.com/static/5fc1bcddd26ff1194f799cbf/t/5fc7d4ffe67fb654ad7091eb/1606931711556/11715536784.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca6b.bin
1ce4b2fdc1df4d7a3f8e69b7eb7a19609c46ff1e189173a59163ae7bc8dc2eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6B 5496 bytes
font_01_sfnt_off0000dd34.bin
18dc5a7e4377095657228b38fa4a8f648f33b9b52f7d2084fea36b9a67ef26fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD34 12632 bytes

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