Malicious PDF — malware analysis report

Static analysis result for SHA-256 6137f1ca49f7fb92…

MALICIOUS

PDF

40.8 KB Created: 2020-08-02 07:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32846c7b83c96c906d0511ecf828415d SHA-1: 5e13dbc2a916f4cb66cffb4463dfa3fef42398bb SHA-256: 6137f1ca49f7fb9295f3ff883758a90b1cf8a3197dcbbbeac7733aa8f85a7a2b
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for PDF_MALICIOUS_REDIRECTOR_LINK. The embedded document body text, though heavily obfuscated, contains URLs that are part of this redirection scheme. The primary malicious URL identified is https://ttraff.cc/pify?keyword=pdf+google+viewer, which is used to redirect users to potentially harmful content.

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=pdf+google+viewer In PDF document text
    • http://files.en.bio-mas.org/uploads/1/3/2/7/132711961/dd97a313e.pdfIn PDF document text
    • http://files.doggiestylezinc.com/uploads/1/3/1/3/131384663/6210112.pdfIn PDF document text
    • http://files.620chilinights.com/uploads/1/3/1/6/131606121/zukadak.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/1/0428/4933/7500/files/14123376329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/magnimar_city_of_monuments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/tidokisabeninidigubakepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4633/0791/files/sibilapugebonuwiliwujined.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/giropuratakuxoruzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/35931881709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/smallville_full_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/10512213709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/revosivege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/lasaxemof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/24781508801.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 5

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_off00006335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6335 4840 bytes
SHA-256: 7cd24aaaf9ce931b16073bb16840b1e277bdb36b4ded78d14452921625589d81
font_01_sfnt_off000073d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 10176 bytes
SHA-256: b23f028ba95326a68dfc59e3c363451eccaf215724dc80e3bdeb3d64b89c9920

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