Malicious PDF — malware analysis report

Static analysis result for SHA-256 d44b3f8694f4807e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-16 17:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48eb58dadc043fece208938dc8a123fb SHA-1: 857dcf13ee25283a3886ef8c5a3775d84da563b4 SHA-256: d44b3f8694f4807e6ccaa52b955d7d358ef310cd47b2a65d2fe4d9a37f1bd77d
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which are hosted on Shopify domains and appear to form a link farm. These links ultimately redirect to a malicious URL, ttraff.ru, which is flagged as a malicious redirector. The document body itself is largely corrupted, but the presence of the 'Borderlands 2 salvador skill tree guide' text suggests a lure to entice users to click the malicious links. No scripts were extracted from this sample.

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=borderlands+2+salvador+skill+tree+guide In PDF document text
    • http://files.apeacefulbirthdoula.com/uploads/1/3/0/9/130969440/5828cbf8.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/1/0440/7898/9462/files/rotolomebalagatobipedax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/tuvifaveduritujezolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/lopexazutorepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/19919598793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8775/7461/files/english_speaking_practice_sentences.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/sai_baba_satcharitra_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/68375936502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1927/0306/files/96463891449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/69967055399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/physics_formulas_class_11_and_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1031/6694/files/58211885730.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_off00005b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B87 5296 bytes
SHA-256: ae391b60de00444dd98916fd52afb1c14fde1be239c5079d3751d3aecf145249
font_01_sfnt_off00006daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAA 9900 bytes
SHA-256: d841d4739ce289517b623711439b26d79e688967b894daa3f2114115a6235a73

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