Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f83100390e525e…

MALICIOUS

PDF

48.8 KB Created: 2020-07-29 13:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 377e3f7a5078439bc47e1a2e0d8adc0a SHA-1: 9e7d63c2a372de1819c914d81776c193eee2752b SHA-256: 00f83100390e525e2e29e854dfdf1918f5ab6748fac2df64384c28dd54feac78
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to potentially harmful sites. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the SEO link farm pattern point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=beef+cattle+breeding+pdf In PDF document text
    • http://files.thelegacyclub.net/uploads/1/3/2/3/132303151/rigofukori_lurebilanim.pdfIn PDF document text
    • http://files.claverackfire.com/uploads/1/3/0/7/130775143/loruberetat.pdfIn PDF document text
    • http://files.gigilynfineart.com/uploads/1/3/2/6/132681796/gimitukow_gukojawuf_wefatejuvi.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/1/0431/0099/5741/files/87521256862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/tikav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/3868439937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/95784997486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/85469897785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/mikanudulijan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/80718861549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3924/3943/files/41597203897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/suvebigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/bakitepupoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/zefomejowasefid.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_off000082a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A4 5012 bytes
SHA-256: 4f9f9338659edc44bdd741d2e75485a08dfda8513eb118948d4a9ebffaeb9047
font_01_sfnt_off000093b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B3 10032 bytes
SHA-256: 525ad394a8ef6e83c8834fad4c139d55fa8b566f8dfdf597e58d9666627da8b0

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