Malicious PDF — malware analysis report

Static analysis result for SHA-256 603120de363ad4d2…

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 09:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1eec37836f6da0bfb05bac766a4d4786 SHA-1: 43a055f3cc62095374a0dbe1d4487e661205c0cf SHA-256: 603120de363ad4d2fa84197ae01c291ff3c0ba47e6a7a3f33f1fbb38b820626d
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 (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to market research PDFs. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for what appears to be 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=que+es+estudio+de+mercado+pdf In PDF document text
    • http://files.leadaltitude.com/uploads/1/3/1/4/131438891/4c4fd095149.pdfIn PDF document text
    • http://files.edmontontowingcompany.com/uploads/1/3/2/6/132682042/relorikelutu_piteberilivuka_dapurunilogibet.pdfIn PDF document text
    • http://files.royalchange.fit/uploads/1/3/1/3/131383586/tovowazekanud.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/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4528/9127/files/89227628098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/bakudosotebazitiwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3014/2363/files/dajifumipopitob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0104/files/voziriwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3265/7575/files/2977241533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/32085701180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/62215372336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/giraxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2985/4368/files/xotaxuviselunisofusizunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/72519371500.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_off000076e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E1 5108 bytes
SHA-256: b271a9f881e2c110e4bd8a6991c13e7abb1c394133dc5de16941a5b1d97f9ec3
font_01_sfnt_off00008846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8846 11324 bytes
SHA-256: 1d187f9bd5505bc409862dd816441a7c485e7addba19a987ebd930bfd8bce66f

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