Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffaf24f5c17f274c…

MALICIOUS

PDF

38.4 KB Created: 2020-08-21 11:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ea1393d4508b7e0f16a020ebd573cd9 SHA-1: ce0782d7bbf45f2f750c6d41f65039c04d36e3d9 SHA-256: ffaf24f5c17f274c5d763b36b3a8a2efa537ed11234649c79cc6d5064ecd64c0
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains a high number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at `ttraff.ru`. The heuristic `SE_LOLBIN_RUN_COMMAND` indicates that the document may contain instructions for executing commands, likely to facilitate the redirection or download of further payloads. The document body itself is heavily obfuscated but contains the malicious URL, suggesting a lure to a resource that is likely malicious.

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=admiralty+notices+to+mariners+free In PDF document text
    • http://files.littlemonkeyscafe.com.au/uploads/1/3/0/9/130969061/3519794.pdfIn PDF document text
    • http://files.whalingconference.org/uploads/1/3/1/3/131381078/bawupogexu.pdfIn PDF document text
    • http://nafumug.chuckpotterart.net/uploads/1/3/1/3/131382406/mibitifujova.pdfIn PDF document text
    • http://files.holisticwellnessny.com/uploads/1/3/1/4/131454560/31b30.pdfIn PDF document text
    • http://files.selectstartpress.com/uploads/1/3/1/3/131383837/biwowo.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/1/0431/1770/7425/files/bewojikukivaremunumuvaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/53534216447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/54875817067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/87974677163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/mudenixuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1416/7455/files/94340515689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/ludanim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4323/8567/files/d_d_5_unearthed_arcana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/kovoviluma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/curl_file_from_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8132/5987/files/abhishek_kumar_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/6110752004.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://cdn.shopify.com/s/files/1/043In macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D0 5256 bytes
SHA-256: c37009fc4688c122f38c3ae449bf731e9c33c2a588c03f00d88037b437d59f5b
font_01_sfnt_off00006a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 10040 bytes
SHA-256: 7c73f945f6915802fdfb0c66c28ddea9a4dd65f328a37ff40cae73d79ce53287