Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b0fd561ee33614…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 04:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b93e05b077475d41deae345b96594c0 SHA-1: 3c04ab0dbfe98eadd545a435ead1d190796b53d3 SHA-256: 83b0fd561ee336143e88551b3fb1a215d8dfed8a57d41252ef74e8eb8c63744c
202 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body also contains the same malicious URL, suggesting a phishing or scam attempt to trick users into downloading potentially harmful software. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=audio+video+converter+apk+full+version In PDF document text
    • http://files.esandelle.com.au/uploads/1/3/0/7/130739247/06c7fe87174b.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/1/0449/2935/1835/files/punax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/shuttle_badminton_court_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/sotubibadivivazob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4339/7525/files/artificial_intelligence_in_digital_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/state_trait_anxiety_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/10_medicinal_plants_and_their_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/great_food_fast_bob_warden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/83050786724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/beezus_and_ramona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/82506268964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0419/8038/files/sejogaxepatusabiwonuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/pevozojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/77433630386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/nomezovoxakibamila.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 2

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_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 5264 bytes
SHA-256: 542d06fee0ab27308bcd2efb5cefb2495cf97efa90fbb7cab0e1f6e70a9a0e5c
font_01_sfnt_off000073c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C4 13496 bytes
SHA-256: ee4ffaf8cae49209de8fcdeeb7cf4cbbb9bbf021dc2afc2ebfcded915ba68174

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