Malicious PDF — malware analysis report

Static analysis result for SHA-256 2905cf64d485806c…

MALICIOUS

PDF

64.1 KB Created: 2020-08-19 17:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f1ca2e27218479576b3e5605365d7ac SHA-1: 0dd9c4666d79eabf57c05fdc985abf66c0ba19e1 SHA-256: 2905cf64d485806c6da33196c30bf144ae5455448f61b9a04271d13d703314d7
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external links. One of these links, 'https://ttraff.cc/pify?keyword=android+architecture+components+github+java', is identified as a malicious redirector. The document body appears to be largely obfuscated or corrupted, but the presence of the redirector and the link farm structure strongly suggest a malicious intent, likely to lure users to malicious sites or for SEO manipulation.

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.cc/pify?keyword=android+architecture+components+github+java In PDF document text
    • http://files.thatpenbloke.com/uploads/1/3/0/9/130969656/pipogilivikaz.pdfIn PDF document text
    • http://popolig.stincrowvoden.com/uploads/1/3/1/1/131163658/kosiw.pdfIn PDF document text
    • http://rodow.haleymclaughlin.com/uploads/1/3/0/7/130776457/2964233.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/1/0433/0799/1208/files/jersey_city_parking_authority.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/996289449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/vuguzilepewewenejimimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/73512334167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/wimojusobikatuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/femuxotetuxomodop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/10984605925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2480/8096/files/wuwijizunudekekarekabawut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/street_fighter_4_tier_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/pewubiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/51083231159.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 3

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_off0000b628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB628 5720 bytes
SHA-256: c69484ac97d374ef0c8ceb9a17d568eea9c29102feb09602427e9e9c27b377c5
font_01_sfnt_off0000c96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96C 12996 bytes
SHA-256: 7f4fc986d1e7e2b50fc09a385877eea2e69c17d541d3a3029f28f793019eea02

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