Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fdbd6c6238d667…

MALICIOUS

PDF

74.0 KB Created: 2020-07-28 07:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79ed171bf49e009db1c8cd825308abce SHA-1: 86176ab01813727352e866790108f37e83ecd1bd SHA-256: 87fdbd6c6238d667ca798e5685af68aa7046de815a290ef88aee3b80044ba636
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to create a link farm, directing users through a redirector to download other PDFs. The primary redirector URL, 'https://ttraff.cc/pify?keyword=acquittance+register+format', is flagged as malicious. This indicates a phishing or scam attempt to distribute further 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=acquittance+register+format In PDF document text
    • http://files.whatwouldateacherdo.com/uploads/1/3/1/4/131454238/3e653d2cf4.pdfIn PDF document text
    • http://files.trebor-ts.com/uploads/1/3/1/8/131871690/4fa93.pdfIn PDF document text
    • http://files.trancityevent.com/uploads/1/3/1/1/131163777/4133409.pdfIn PDF document text
    • http://files.ninelivestwine.com/uploads/1/3/0/8/130874629/vezik_gunefitotokek.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/1/0427/7790/3263/files/bizawewojebujur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/zonorelugoxetezex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/43821811504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/sogubesusawevodizabijim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/25768880301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/tuwemirupizopadibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/3245107089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/begofexakopabule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/nifamekapovavukepaxemome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/4425004111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/47455577025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/wukiraxetevereponure.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_off0000e484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE484 5164 bytes
SHA-256: 59c35d982cc7d64910cb82b46d992be9b24b11198c1585ade3355a0c972597a2
font_01_sfnt_off0000f5fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FD 11488 bytes
SHA-256: 3ab283a4e0682fa1386a08bc0b278151cab260be0bc0aa84b01fca1d5664284b

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