Malicious PDF — malware analysis report

Static analysis result for SHA-256 3742b4574dfe072c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-20 11:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4d708640e9a07b254fe3d2bc4182148 SHA-1: 559ad6e08a902e32ec5646e2bbb3b5cf5c0eeba7 SHA-256: 3742b4574dfe072c5563498c046cbcb0bbbb11a10c3a672a1c0001dce3eb4e41
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of links, many pointing to SEO-optimized PDF files, and a critical heuristic identified it as a malicious redirector. The document body and heuristics indicate a lure for a "free download" of software, likely leading to a malicious site via the "ttraff.ru" redirector. The presence of a "PowerShell v1.0" token suggests potential execution of commands, and the "Remote-support tool lure" heuristic indicates an attempt to trick the user into installing or connecting to such tools.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://ttraff.ru/pify?keyword=filmorago+app+free++for+pc In PDF document text
    • http://files.walkaboutpouch.com/uploads/1/3/1/4/131437457/tobomukulifomi-fadudufuginuk-budazer-vobabipemidige.pdfIn PDF document text
    • http://demugiw.romarogers.com/uploads/1/3/0/7/130740086/jerojodulip_ruzawagobof_zowodorow_mudamo.pdfIn PDF document text
    • http://files.zeropointfieldenergy.com/uploads/1/3/1/4/131455024/magofudopaf_xokomebob_kalutisaf_mipivoxuwoketep.pdfIn PDF document text
    • http://files.readnd.org/uploads/1/3/1/6/131636914/b14a81a61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/bimoverazidapepojox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/53671796010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/jidedurokudoloxizozan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/ponelogokujodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/33317026492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/45193479765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4587/7922/files/2831433965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3508/files/suragojogufisosibaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90841244024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/658372908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/memosavagaliludix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/fuxenigoboliwub.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7278 5112 bytes
SHA-256: 6f91f1b9e4f0cc20cb5ce7809be51945fe0ec18eabb2096d3f6a1fe1c7afaf2b
font_01_sfnt_off000083cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CB 10232 bytes
SHA-256: 225552119528f5060037132ce990f28e6abff948fe6f27eac880a2a6f278add6