Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1890d0acbd38a4…

MALICIOUS

PDF

41.3 KB Created: 2020-08-15 00:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31719bd41dfac695453a23277eeea3e1 SHA-1: bd647fee771114d1a16c782babbdc3896c9fc64a SHA-256: 0c1890d0acbd38a4776c12acc40afa445e06e8e4fcabff75b1fc585a5b40d3dd
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.com) and then to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to obscure the final destination and potentially distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=avplayer+stop+ing In PDF document text
    • http://pegin.darebritannia.com/uploads/1/3/1/1/131164250/vosafi-doditotajo-luzipizugux.pdfIn PDF document text
    • http://bijabevaz.therapyinnovations.net/uploads/1/3/2/3/132303189/7696333.pdfIn PDF document text
    • http://files.jessicabrownmusic.net/uploads/1/3/1/6/131606343/turaterosotewip.pdfIn PDF document text
    • http://files.communitycoc.org/uploads/1/3/1/3/131398367/jusino_didekatemo_lipamezikapanu_fesedosifa.pdfIn PDF document text
    • http://diguz.dental-public-health.com/uploads/1/3/1/4/131482952/vagavigik.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/1/0430/2965/9797/files/jotakubasolawuwigobitak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0051/8040/files/bavifipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/jizugesajalawexit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/jupunurejanewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9167/1705/files/33516948443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/duniwivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/1587/7287/files/benim_hocam_tyt_matematik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/antenna_design_basics_pdf.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 4

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_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 5140 bytes
SHA-256: c3c3f50854d9832eaeb57ce254569932e80c782ea547ab6a09181562300e6eb1
font_01_sfnt_off0000701f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 12800 bytes
SHA-256: faf7b17a039cce308c5959a16bd780b8cbfba5cb355629caef3591106343e2f2

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