Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d5eb69b7f0c4d9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 13:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99b26459363ef8f3e23173e2b70c00ad SHA-1: c0ba514c7bd883d11d993976655405575c187b8a SHA-256: 80d5eb69b7f0c4d9e64df7638ceecaa59c4c945d2499f2bb8a8913bc096738e0
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body text and a specific heuristic indicate that the lure is to download a dictionary application, which is likely a pretext for delivering malware. The presence of multiple SEO-optimized PDF links suggests a link farm designed to attract users seeking 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=advanced+oxford+dictionary+apk In PDF document text
    • http://files.charlieinit.com/uploads/1/3/1/6/131606289/f0fd244.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/bezier_surface.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/bopirutejiritakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/oreo_live_tv_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9262/1979/files/alcoro_em_portugus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0238/6856/files/linunilawuvuwojewig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/doxewobotopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/spread_shotgun_wing_t_offense_playbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3703/8491/files/balle_balle_song_ming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/66425009829.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B21 5012 bytes
SHA-256: 306b1a036e4999b9cc66b9b7dab72dff37b47daf3a1d78a74a7100c11c588cc6
font_01_sfnt_off00006c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C45 13060 bytes
SHA-256: 092b1ed3247ff46fa43376399978e89112b61e57034f4e1b957cc09f982d4e9d
font_02_sfnt_off0000966a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x966A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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