Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a5dffc0f9d8a9a4…

MALICIOUS

PDF

40.5 KB Created: 2020-08-05 08:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc3b831a0bddb27caf49271021bea0a4 SHA-1: 6a99ef95c3fff8232fc83b8fb8a982227cb524e3 SHA-256: 0a5dffc0f9d8a9a49db95efd0ac6d2cae30988373e656794173a232b2f229030
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is associated with malicious activity and is likely used to funnel users to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking Shopify links, suggesting a lure for free downloads.

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=mathematical+model+examples+pdf In PDF document text
    • http://files.cutthecord.us/uploads/1/3/2/8/132814241/moxawutofowawid_tumorifum_wegajifirezivij.pdfIn PDF document text
    • http://jedoronil.inspiredfictionbooks.com/uploads/1/3/1/4/131438464/xepate.pdfIn PDF document text
    • http://files.iemthomas.com/uploads/1/3/0/9/130968942/4903304.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/1/0436/3947/2288/files/coming_back_to_life_joanna_macy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/zepux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/21001370981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/woxavodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/17484565862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/79504363080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9187/0375/files/jepefigugalawuboba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3437/files/20804880991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/pay_to_play_magic_training_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/vaketojav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/sudiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/95494093261.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 5

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_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5372 bytes
SHA-256: df7dd416aaf0e56b21b329bd8ff189a48b91345b374657bb9bc71eac76b7a849
font_01_sfnt_off00007307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 10088 bytes
SHA-256: b61f23dd3b79c4d8c8ca8f30e4e230add3022581c14b8f2773b85d62615202c0

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