Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ffccf988fd05c0…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 13:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ceae6f6bc57f5709c66fa363a172353 SHA-1: 3a050eb2f89c77a85ba90e4992e2f49da0fffcd8 SHA-256: d4ffccf988fd05c02deb80479ec2c19e838025fae65e2908e644b24b7a166909
234 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious redirector infrastructure at 'ttraff.ru'. The presence of a visible LOLBin command execution instruction suggests the document is designed to execute arbitrary code or commands upon interaction. The primary malicious activity observed is the redirection to malicious infrastructure via embedded links.

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=acdsee+mac+os+x+free In PDF document text
    • http://files.museumofsocialjustice.org/uploads/1/3/1/3/131380337/minuwuvexi_boxivos_sokovon_rapasajaxefif.pdfIn PDF document text
    • http://files.illinoisclimbingclub.com/uploads/1/3/0/7/130740444/48fc444a69.pdfIn PDF document text
    • http://files.primitivenoiseband.com/uploads/1/3/1/3/131398573/xejamoruzir.pdfIn PDF document text
    • http://files.nicolettelynch.com/uploads/1/3/1/3/131379743/5030429.pdfIn PDF document text
    • http://files.weareallprettystupid.com/uploads/1/3/0/7/130775063/20cec07b2c0ce46.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/1/0431/4975/4519/files/dopukozolofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8374/2873/files/15804129347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/boeing_ethical_business_conduct_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8747/0248/files/75250086922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/curl_set_header.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/38347044088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/72445681753.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/robbery_bob_3_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0178/1158/files/kitusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/43349260040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/nagujakixilimub.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/1/0429/8In 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_off00006c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 5192 bytes
SHA-256: 6f4d7a8a425f54b1d78a2932fc5675a70e9abdbb2ff68f001722386bc82fdb07
font_01_sfnt_off00007de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 10528 bytes
SHA-256: 4ef2c4ecd36894995a528649f3ce8354eba442a73f20ad8cfa9184eefcbb9e3c