Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbd42adf7bd8973…

MALICIOUS

PDF

43.3 KB Created: 2020-08-16 21:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13614aa6746af4ec591bfca043cb8595 SHA-1: 07aa26399580fb07aa5fd262cd48142883f75702 SHA-256: 0cbd42adf7bd8973ca0dc24a569dd217623c778acf6ddf866ce9e7b5b03ead30
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary URL pointing to a known malicious redirector. The document body, though obfuscated, contains text and URLs that suggest a lure for free downloads, aligning with SEO spam tactics. The ML classifier strongly indicated maliciousness, and the presence of redirector links supports a phishing or scam attempt.

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=lagu+almost+is+never+enough+original In PDF document text
    • http://files.familyenrichmentireland.org/uploads/1/3/1/6/131606730/8473938e373.pdfIn PDF document text
    • http://gexumuki.sdbau.shop/uploads/1/3/0/7/130739783/5467553.pdfIn PDF document text
    • http://files.actdu.org.au/uploads/1/3/1/4/131454883/2285660.pdfIn PDF document text
    • http://fafux.thewriteblend.com/uploads/1/3/2/6/132680813/c7e035233485a.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/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/92803603468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/51372943646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/akroasis_tab_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/9266871514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/radoladonexopirofizotozel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/tovurajipukutisodilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/fevowezojugudigut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/56081666035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9352/files/34935981231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/zumazirusetadufilubakesi.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 2

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_off00006136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 2940 bytes
SHA-256: 96763491784a8f2f8c8640cf8876912a6462cc7338d1cca552fde460ece23c22
font_01_sfnt_off00006bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 5100 bytes
SHA-256: 1d228bad24adb22ffe88faaeab359a4957e50f17eafe539c6dda735a5a0df046
font_02_sfnt_off00007cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF8 10240 bytes
SHA-256: 57be35a388f11ded157267efc194989127e6876770aff1b47de2923ad1360454

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