Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f98a4b34a759bd7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 04:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d130b1f41c9c1c2c817192614c7b4982 SHA-1: 23645f1c03917d66249d754719c6ab943dc0a40a SHA-256: 8f98a4b34a759bd783b8ecacd7188c6ca3ec9d7b1b83d2d72eefdf8f0c2e3548
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body and heuristics indicate a lure for a PDF download, which ultimately leads to the malicious redirector. While no scripts were directly extracted, the PDF structure and link farm suggest an attempt to distribute further malicious content or phish for information.

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=bhagavad+gita+chapter+14+in+english+pdf In PDF document text
    • http://sejub.pfcpid.com/uploads/1/3/2/6/132695569/viminujuvus.pdfIn PDF document text
    • http://files.frenchstandardpoodles.com/uploads/1/3/1/4/131437210/repuleti-ludivi-rufowigumibimo.pdfIn PDF document text
    • http://files.abundantblessingweddingofficiant.com/uploads/1/3/0/8/130873810/8593848.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/1/0430/8815/0690/files/kadaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2583/1835/files/palipepovetovoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1614/3526/files/kubler_ross_stages_of_grief_handout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/52753692012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2289/9608/files/78042548763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/ximix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/62908377932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/eclipse_free_for_windows_8._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/gijitinizes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/fire_bible_esv.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
🗂 Part of campaign: avhscoreacademy.com 3 samples

Related samples 5

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Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD5 5664 bytes
SHA-256: 725d2c048bdb7cda0c02bfea75cf1f1526f0db83c40d3eb613c4acd2e6672b1e
font_01_sfnt_off00007329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 12000 bytes
SHA-256: 33cfca7231ad9826306d06ceea6d04de1e26b2a4ac63c843c5fec251a939df34

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