Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf319657a7062b2…

MALICIOUS

PDF

44.3 KB Created: 2020-07-27 20:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f77cf27e1bac59c12ad773c1b84d116 SHA-1: 23ebd866b8a05b0c61dd9c62677dc0ef9faff5a4 SHA-256: 0cf319657a7062b2f0c6fd0eaef4f296b52838e84ddc92b2e2e2c35b77cc449c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that appears to be part of a link farm. The document body suggests a lure related to financial assertions, likely to trick users into clicking the malicious links. The ML classifier strongly indicates maliciousness, and the presence of redirector links points towards 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.cc/pify?keyword=balance+sheet+account+assertions In PDF document text
    • http://files.thelmavelez.com/uploads/1/3/1/1/131164210/vifufomodopa-kuravanakupiwe-nanud-mibejesepe.pdfIn PDF document text
    • http://files.crazyabtcupcakessd.com/uploads/1/3/1/4/131437680/e23efcef1.pdfIn PDF document text
    • http://files.yellowbowlproject.com/uploads/1/3/0/9/130969075/289861.pdfIn PDF document text
    • http://files.jeffellwood.net/uploads/1/3/1/3/131380469/rakoket.pdfIn PDF document text
    • http://files.doublertack.com/uploads/1/3/2/6/132681464/zenadonir.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/1/0439/5443/8302/files/tobowevojojeraxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/pilig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/51057407461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/kawavewizeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/15790225129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/sinapusemukikibaninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5512/7459/files/jemujovudawevep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/90483191501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/kugopejigozaxepexonurapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/9982708091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/76483479860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/pesovonow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/rudulojud.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_off00007197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7197 4816 bytes
SHA-256: 9ca7630988c330793a3d57a8800e5dea99549484e596523974b64f4c579204eb
font_01_sfnt_off000081df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DF 9864 bytes
SHA-256: f31928205512b43f1bea2c73c142fa978e92031f212d186392b9a7d1194d3e7b

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