Malicious PDF — malware analysis report

Static analysis result for SHA-256 a873c8f411ca149b…

MALICIOUS

PDF

71.0 KB Created: 2020-07-30 05:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d634033667a628aae3d0aca01eabe8fb SHA-1: 418ba461d14b11023ea46ee7c50a3d86e0db02b3 SHA-256: a873c8f411ca149bb2c8dffd76568d4f41d234cb2ddf0e38d17be32ce7dad91e
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to traff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, likely for SEO manipulation or to obscure the final malicious destination. The presence of a 'LOLBin run command' heuristic suggests that the document may also contain instructions or embedded scripts that leverage Windows execution tools to facilitate the malicious redirection or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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=integration+by+reduction+formula+pdf In PDF document text
    • http://files.livingwetoday.com/uploads/1/3/0/8/130814411/lasalekug.pdfIn PDF document text
    • http://files.pstransport.net/uploads/1/3/1/4/131453114/jefuzonadela.pdfIn PDF document text
    • http://files.elkfordcurling.ca/uploads/1/3/0/9/130969192/b98df.pdfIn PDF document text
    • http://files.trilogyplayerstheatre.com/uploads/1/3/2/6/132696174/bc43030108543b.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/1/0428/8148/2919/files/zaripibamowowivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/10914384844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/lusimugapudav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/86421944414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3839/9912/files/luvukeguxuwidusov.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/filedujexitumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/15500244987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/89992166990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/gelizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mipubafuminidumef.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: elkfordcurling.ca 4 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F0 5360 bytes
SHA-256: 249a94f5b0874a052842318ede96f4e14f3efde0ac95297c07ce4fa6ecb7e15b
font_01_sfnt_off0000c60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60E 15976 bytes
SHA-256: 8150867d06ad63e2595ad36c4bb64e9c2677f24cb547c5bf611fd5481cd6337e
font_02_sfnt_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 16436 bytes
SHA-256: 46b377b4107ac445b0e1ea027efedef7805138f04839a41f1c35b47f7151990f

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