Malicious PDF — malware analysis report

Static analysis result for SHA-256 781b381b1c845dee…

MALICIOUS

PDF

44.2 KB Created: 2020-08-27 22:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5d9466cc9de373000788981b9b816a5 SHA-1: ea960b59fd506fd605e1706c4bab9ea2f471bffe SHA-256: 781b381b1c845dee5b689aa21b4a84403634f3cbb5cb3e6369166bcc1a81105a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'free cyber coins' and includes the same malicious URL, suggesting a lure for phishing or malware distribution. The presence of numerous external PDF links, many pointing to Shopify, further indicates a link farm designed to obscure the malicious destination.

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=free+cyber+coins+transformers+earth In PDF document text
    • http://files.ddtakingoutthetrash.com/uploads/1/3/1/4/131437919/3940782a64fff.pdfIn PDF document text
    • http://files.theedgecenter.net/uploads/1/3/0/8/130814056/dawima.pdfIn PDF document text
    • http://files.darasblingphotography.com/uploads/1/3/0/8/130874433/e3f61189d1.pdfIn PDF document text
    • http://files.elmirabaptistchurch.com/uploads/1/3/0/9/130968984/4805100.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/1/0438/0144/4512/files/xojopovupare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6852/2657/files/manual_de_abordagem_policial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/makerere_university_admission_forms_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0692/4712/files/squeeze_theorem_practice_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4641/files/39750293331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/39170271737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/63650020720.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 2

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_off000070a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 5284 bytes
SHA-256: 155d10dc062a4960a1a4099f2f1120f1062c051a3cf7424847738351c0eb5adc
font_01_sfnt_off0000827b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827B 9864 bytes
SHA-256: ca3e84731ff283d5d784fe33b470a0fd33b04fe98c66bb4a7e70ba13cab9c373

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