Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1feae10986abf41…

MALICIOUS

PDF

46.4 KB Created: 2020-08-10 22:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffab54917138cafa139c4553b126b8fc SHA-1: 50ef42bb41dc7a642174f0d2bfd5ae524c506acb SHA-256: a1feae10986abf4126a425bd02fa3e26659c75797afcfbd60c9932c2eda3a97f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.com/pify?keyword=assepsia+e+antissepsia+em+pdf'. The document body, though partially corrupted, also contains this URL and numerous other embedded URLs, many hosted on Shopify, suggesting a link farm or content distribution network used for hosting malicious files. The primary attack pattern involves luring users to a malicious site via a seemingly innocuous PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.com/pify?keyword=assepsia+e+antissepsia+em+pdf In PDF document text
    • http://files.consumerschoicepos.com/uploads/1/3/0/7/130776413/bivon-pigewuvut.pdfIn PDF document text
    • http://files.outofthedarknessgriefsupport.com/uploads/1/3/0/8/130813738/3730870.pdfIn PDF document text
    • http://files.geras.sk/uploads/1/3/1/3/131380953/4741486.pdfIn PDF document text
    • http://files.prosurfschoolhawaii.com/uploads/1/3/1/3/131379591/40190.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/1/0437/6687/4266/files/44393738709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/koduwabevalenorovupev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/synonyms_for_overused_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/49658004435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/fojado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/i_feel_bad_or_badly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/morojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/60011797684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/61150675546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/kuvapoziwonaxepew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1039/files/literafuguresonozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/batuluxipep.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B4 5048 bytes
SHA-256: fb8bbaf28d87b1d0e7d9a1f3d7712f9ba62d03be984a0afc65aa52ac039a3f51
font_01_sfnt_off000083d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D2 13316 bytes
SHA-256: 6350cdacdb389d39b18a8091634012d2d1c0787784689bc9fc92e28e3206b623

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