Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6ea8fc54c0e2d1…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 20:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31a73500c800fc2ef403bf5373181b93 SHA-1: 9ebd9e4eebda9953e91f1a94ac87e376c5774465 SHA-256: 4f6ea8fc54c0e2d123a554fcfd3a626c4d8a50552acc80c8fa65390c66292966
170 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=altova+xmlspy++for+mac', suggesting a lure for software downloads that redirects to malicious infrastructure. No scripts were extracted from this sample.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=altova+xmlspy++for+mac In PDF document text
    • http://files.jamarkllc.com/uploads/1/3/1/3/131383251/zesimizerimag.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/1/0437/7106/8577/files/admiravel_mundo_novo_resumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/pivemeromituladozijom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/lojamubetateretixadomejax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/morunevak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/juleruti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/23262311475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/24276551188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2599/6698/files/94068451877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/sap_implementation_guide_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/semajikovobanewiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/duzisapix.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
🗂 Part of campaign: jamarkllc.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D33 5380 bytes
SHA-256: 19492f3b0b8af31211c5b2ea31bece8d37eb423ec1966911414bd2a9cb7c848a
font_01_sfnt_off00006f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7C 11172 bytes
SHA-256: 574e5490513fca155503a01d81a52c9f68e9c76b05db1f1f54919d01e4f44154