Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c74c031e7c2a78…

MALICIOUS

PDF

44.8 KB Created: 2020-07-30 20:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3627451b90e43f64805d339a08b2c26c SHA-1: 0e19fc41ad8149f1353d90b1847fcdc46cc2e84e SHA-256: 57c74c031e7c2a786b086eeaf9cc9f1913c6b3132a044a4bc6b933ad050c5d9c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'chaos theory of careers pdf'. The ML classifier strongly indicates maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to harmful sites.

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.com/pify?keyword=chaos+theory+of+careers+pdf In PDF document text
    • http://files.reyalegria.com/uploads/1/3/1/8/131858916/55afdef5.pdfIn PDF document text
    • http://files.stmaryschurcheg.co.uk/uploads/1/3/0/9/130969801/nuzezoxeku-kudexi.pdfIn PDF document text
    • http://files.cornerpostcowboychurch.com/uploads/1/3/1/8/131860204/f17a3a7a6.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/1/0437/0087/9510/files/16283724551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/xosexupopudaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/47851263770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/71270104370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/nekuwarupexufixetedipori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/54610439004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6275/4461/files/7907929315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/woxiwomumoluratulow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/38726907858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/nejatete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/jupakogi.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_off00007373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 4968 bytes
SHA-256: caff9e31669224def2dd524624c68eb9f7ada58fc79c89641badad8f1b047be9
font_01_sfnt_off00008477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8477 9956 bytes
SHA-256: 1964b65db0c838325ec0272d1be0f1ffece7b5ebce87065ccbbe7562d69b1b55

Open this report in the interactive analyzer, or submit your own file for analysis.