Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b1797b1188d4c2…

MALICIOUS

PDF

48.6 KB Created: 2020-08-25 09:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74ab8e18e292648734c04212907f202a SHA-1: c2d17ceaf44c32720a75863dde5b43e5d9ff7cf9 SHA-256: 82b1797b1188d4c217c233e26894c335594627380c76b88571eb1e0c4044e4f3
170 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'Yo whatsapp the latest version', which redirects through a known malicious redirector (ttraff.com). The document body and heuristics indicate a lure to a link farm, with many embedded links pointing to Shopify and other domains, likely for SEO poisoning or to host further malicious content. The ML classifier strongly flagged this PDF as malicious.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=yo+whatsapp++the+latest+version In PDF document text
    • http://files.allinonerenovationsllc.com/uploads/1/3/0/9/130968921/nigewanidine-kudilago-xikinafizip.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/1/0432/9222/9797/files/believers_eastern_church_liturgy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/google_maps_saved_places.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/bololobaxuperekudil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/best_security_systems_for_homes_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/mamat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/wifigizitef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/kamewovobuzutujiwopatam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/nalizefezoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/best_wow_private_servers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000751c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751C 4808 bytes
SHA-256: 680dd33a0a341a15b2cce148c022cb922e4ade5aadbe4aec935c2c5536ad07ae
font_01_sfnt_off00008579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8579 9980 bytes
SHA-256: 38300a01a9e7dca051949a800c5f9f6426fc1d0c972320f6dbf63d487971a6e7
font_02_sfnt_off0000a7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7AD 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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