Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb386525e228607b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 16:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47811a082d7dd497c8ab3a954b44e5fd SHA-1: 02d09e5d5df325776770b45a0a86fc1462e669c0 SHA-256: cb386525e228607bd4f0146895e5d9ffeae76d193d6b586b7eb846ba6e09e745
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru' with a keyword related to Android updates. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL found in the heuristic firing. This suggests the primary goal is to redirect the user to a malicious site, likely for malware distribution or phishing.

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=android+9+update+bluetooth+issues In PDF document text
    • http://xivovum.triplecrownlacrosse.com/uploads/1/3/1/4/131453558/detax.pdfIn PDF document text
    • http://nowewera.thegutguys.com/uploads/1/3/1/4/131453206/pawodisuk.pdfIn PDF document text
    • http://vivave.donjitsudodojo.com/uploads/1/3/1/4/131453197/wapixiduvanitigom.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/1/0431/6397/5835/files/combat_lifesaver_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/kagarenigaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/human_anatomy_vol_1_upper_limb_and_thorax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6041/1033/files/probabili_formazioni_sportmediaset_4_giornata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7265/8335/files/jevuxudik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/rararosanagij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8593/0389/files/basic_guitar_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0403/3181/files/julonebolefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5360/files/27094873721.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_off00006665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 5332 bytes
SHA-256: 2b5549d4dc7e2050a774fc43b8028a121e18c66e252d362916535e2340e421b2
font_01_sfnt_off00007869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7869 9708 bytes
SHA-256: 688901e9a03a158f59ea8776219b50c5db129993a7d1f2f225b01565d9400e87

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