Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58f70eb9d901e42…

MALICIOUS

PDF

32.7 KB Created: 2020-08-25 04:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9be6e04788a28bbc08383e4a4a99f2d8 SHA-1: f4fd005026bf739805f9ef7df8155521f4dc3259 SHA-256: d58f70eb9d901e42b14ec047c0895228c8c067d9cd277c800fd141e1979ba97c
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=cbs+local+program+guide'. While no scripts were extracted, the sheer volume of embedded links and the ML classifier's high confidence indicate a malicious intent, likely to lure users to malicious content or for SEO poisoning.

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=cbs+local+program+guide In PDF document text
    • http://files.thehivedanceco.com/uploads/1/3/2/6/132680869/rizukajopabilekopaf.pdfIn PDF document text
    • http://vezesi.helpinghandsrescue.org/uploads/1/3/2/8/132815806/dizaku_webeto_dimokekipune_tones.pdfIn PDF document text
    • http://megetu.nwpwellness.org/uploads/1/3/2/6/132695829/9909082.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/1/0429/3984/2719/files/probability_sample_space.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/xikexegawizapukojuxoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/pifetasusikekebul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/pixalinemuvijasuwekiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/xumekedakopamemofeguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4735/2480/files/47732973084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6344/2598/files/xizuz.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_off000041ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41AE 5436 bytes
SHA-256: 4d419254a2e6abc1066b13014a80acd7e51398a21290fcf9eb30b573fd9c5d2d
font_01_sfnt_off00005408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5408 10168 bytes
SHA-256: 9c4ac27979f3a9036323134d1d1dc476c1e93cfee437684e7f38a77d73cd8750

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