Malicious PDF — malware analysis report

Static analysis result for SHA-256 a131d600d317ebf9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-23 03:39:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 798e2ca3f071ff34c857d87d2da9ec23 SHA-1: 9ee8d2098d96fe895dc4bec114af13fd0cabd8a7 SHA-256: a131d600d317ebf9bfa81842942223f1c87a9d4f03e7cad4dc4e8964eb2c29a1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=personification+worksheets+for+3rd+grade', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'personification worksheets for 3rd grade', indicating a social engineering tactic to encourage link clicks. The presence of numerous external links suggests a link farm or SEO poisoning technique to distribute malicious content.

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.cc/pify?keyword=personification+worksheets+for+3rd+grade In PDF document text
    • http://vezab.stjohnlutherans.org/uploads/1/3/1/4/131413418/pitibu_bamof.pdfIn PDF document text
    • http://jeminewa.marburgshowsociety.com.au/uploads/1/3/1/4/131453194/5814180.pdfIn PDF document text
    • http://sixeguvok.superdogwalking.com/uploads/1/3/1/1/131163927/1768889.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/1/0435/3743/2744/files/wavoxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6584/files/nalezapefirinokumuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3879/4147/files/sap_bpc_reporting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/92583728341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/60772724320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/48542569565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/xalepuvibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/81187972177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/printable_barbados_passport_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/41974392810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0387/6252/files/dress_code_semi_formal_wedding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/91762856700.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_off0000624e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 5572 bytes
SHA-256: 24970ef6d8af45ffe2cc38f360831b0bc5f1b9fbf23532bee5a76a9548b545a4
font_01_sfnt_off00007546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7546 10244 bytes
SHA-256: fe0974481a38123c9ce614874e97f85f3d34252cb8f21cdc205570ac61c5ebd0

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