Malicious PDF — malware analysis report

Static analysis result for SHA-256 247cf109afb682fd…

MALICIOUS

PDF

40.3 KB Created: 2020-08-05 02:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32a9a21538aae4b0d30d33bc7ddaa0a0 SHA-1: cbd535aeea888ff6342c18c059bbecf39bd4f1da SHA-256: 247cf109afb682fd9ab5f4db1eacc7313358953a43b78fc0f5cb96b6ba3c29ea
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'cnc milling machine pdf' and the malicious URL. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content.

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=cnc+milling+machine+pdf In PDF document text
    • http://files.encompassacademy.org/uploads/1/3/1/4/131484133/xunivonigofafu.pdfIn PDF document text
    • http://files.mitchellhabitat.org/uploads/1/3/1/8/131857390/8010547.pdfIn PDF document text
    • http://files.xn--ettrfrdjuren-vcb4v.se/uploads/1/3/0/8/130814769/3906374.pdfIn PDF document text
    • http://nozafese.kennymackay.com/uploads/1/3/2/6/132681579/rabisimazul-nomexaf-jelixezo-jovibolili.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/1/0429/2067/3433/files/gogijobet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/verukapujamivegumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/mozivex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/42302342098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/riwimes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/sewijakivokafos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/64227077854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2598/8757/files/50347797386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.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_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 5200 bytes
SHA-256: b4640ffbf538c5e8335bcec581e180a4f773d7d6300d79904770a48b5ef6bc07
font_01_sfnt_off00007146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7146 10252 bytes
SHA-256: 7423595150fa24c5f743b5b0baa5cc2f8b4380cf8cf6233eadbc8b20f3c9f44c

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