Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8d80383502e468f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 12:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 788bc34eeb349b861d897213137d10e1 SHA-1: 80bef490538f1b6c179f5ebf7bda9eac6637430a SHA-256: b8d80383502e468f7c2f72b22bb8338ebb278ec9bacc2fc64bcfd25c48fef807
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=vsco+x+mod+apk+terbaru', is flagged as a malicious redirector. The document body, though heavily corrupted, contains fragments of text and URLs that align with the heuristic findings, suggesting a lure to external content. No scripts were extracted from this sample.

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=vsco+x+mod+apk+terbaru In PDF document text
    • http://files.waysideresources.com/uploads/1/3/1/4/131407687/nonelosovabimo-gotolax.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/1/0435/9490/7810/files/fosetetegijikekutorut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/vimidowolurodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/6180185651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/63734671727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/85099023673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5291/5098/files/mugimabamuviwekadekixoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2933/5962/files/23752497141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/90885874291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/74795995044.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_off00005a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A67 5152 bytes
SHA-256: cbba697ccc914e99ed85e8dfa3178aed4c5e73f14bcf5870f5c9b6d814c2e0ea
font_01_sfnt_off00006bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEA 10540 bytes
SHA-256: 6924b846edfa4c3e9734d248f982ba209c52637149f7a6111126f45e8f234bb1
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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