Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f0e62ec5f0eb62…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 13:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0444e2b06398a5f232480ca5958d2a7 SHA-1: 94ff58de32f15ba22e6ace3cb366a9ed270b8622 SHA-256: f1f0e62ec5f0eb6262668d5a2538a551db6e6cf00f57a3a48187cf69217a210c
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 PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=clownfish+care+sheet', is flagged as a malicious redirector. The presence of numerous links to external PDFs, many hosted on seemingly unrelated domains, suggests a tactic to manipulate search engine results or distribute malicious content indirectly. No scripts were extracted, and the document body contained mostly binary data and metadata.

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=clownfish+care+sheet In PDF document text
    • http://pagatewo.bridgitkasperski.com/uploads/1/3/1/6/131637814/xetosod.pdfIn PDF document text
    • http://files.nestnnurture.com/uploads/1/3/0/7/130738548/wisana_nudawa_tijezoxulunije.pdfIn PDF document text
    • http://files.gowersartclass.com/uploads/1/3/2/8/132816036/bosavo.pdfIn PDF document text
    • http://files.motivatedqueen.com/uploads/1/3/0/9/130969634/2377994.pdfIn PDF document text
    • http://suzekep.lomondlogs.co.uk/uploads/1/3/2/6/132681647/f55163ee.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/1/0437/6097/6021/files/lixefuxivemusojofen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/95704545766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3411/files/98506782594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6668/6617/files/miruduzutide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/89238253218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/16366830520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4056/9501/files/vifivemarowovujogawadaweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5263/files/29550720146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/rumefurixutizukakutonut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/13462503802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/anemia_de_celulas_falciformes_en_embarazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3098/4357/files/28962505038.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_off00006aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 4964 bytes
SHA-256: 6cfe17dc9d28d12d1708ca42142ae0ca5965d42ece3c928cb4ec9cc874dd5ee3
font_01_sfnt_off00007b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8D 10076 bytes
SHA-256: 5f36822fac7048ad93f13c59a658b729a0db9845c7d8cf8bfa15aa597b27f4e5

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