Malicious PDF — malware analysis report

Static analysis result for SHA-256 27febfea873bc1ac…

MALICIOUS

PDF

33.9 KB Created: 2020-08-03 23:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9050f53dc117554d7407ce8919d464ea SHA-1: fddc092f2342116005edfa188a3b489db3e195a8 SHA-256: 27febfea873bc1acccecc40d83db63057d15b969208816e0bb282e0fa2e116b6
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to `https://ttraff.ru/pify?keyword=vertical+and+horizontal+lines+worksheet+pdf`, which is known malicious redirector infrastructure. This suggests the document is designed to lead users to malicious sites through a series of redirects.

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.ru/pify?keyword=vertical+and+horizontal+lines+worksheet+pdf In PDF document text
    • http://files.noahsthompson.com/uploads/1/3/1/8/131856065/redesokuwabajo_wedisav_siwuxiv_refofibije.pdfIn PDF document text
    • http://files.ml-journeys.com/uploads/1/3/1/3/131382841/gavogetenono.pdfIn PDF document text
    • http://files.originalgravitytours.com/uploads/1/3/2/6/132695372/pigejoxerabebu_tabipimojifiri_zaxidefupaj.pdfIn PDF document text
    • http://files.fbcwaycrossyouth.com/uploads/1/3/2/6/132680986/5778909.pdfIn PDF document text
    • http://files.saltspringtoyrun.com/uploads/1/3/1/3/131382274/3872108.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/1/0434/4260/2140/files/tifitukimivajefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0104/files/6891084454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/79697536156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/77204103135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/jazituzomeged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/arduino_mega_2560_pin_mapping_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/ham_radio_license_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/ninuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/99720530059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3042/files/64560404140.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_off000047d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D0 5416 bytes
SHA-256: 7611f9482fedda5ccc6ea85a41b2b0c8b8af2177efca22f7a9259df71a93ee10
font_01_sfnt_off00005a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A50 9568 bytes
SHA-256: e1c9bf74b9c3c274555f3b63bcae42891d2102b3f7c9c9f31d558d1db1732aed

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