Malicious PDF — malware analysis report

Static analysis result for SHA-256 2746ef51e3ad245e…

MALICIOUS

PDF

49.1 KB Created: 2020-08-25 00:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac2d95f8131c2c8988fabcd703447903 SHA-1: cf2b49e1754ec66be5cbc24addbe2abdbd2f5df6 SHA-256: 2746ef51e3ad245e589fe026918c2a24da82f9cc40a111870a3408dc5833365a
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise malicious activity as educational material. The ML classifier also strongly flagged this PDF as malicious.

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=exponential+equations+exercises+with+answers In PDF document text
    • http://bovonip.larisamantordressage.com/uploads/1/3/1/6/131607163/2540473.pdfIn PDF document text
    • http://files.thetruthwebdesigns.com/uploads/1/3/0/7/130775850/mujibovujox_dixezigujixuw_xizakebopinemet_muwijejuloriz.pdfIn PDF document text
    • http://wiwib.harborcitythreads.com/uploads/1/3/0/8/130874524/7064617.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/1/0438/1055/4013/files/xemevirefiraxogilibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/como_formatear_celular_fenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/nudopegidewumako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/minecraft_villager_workstation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/netherlands_2019_tax_reform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1703/4134/files/lifater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/wutip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4989/3531/files/65241332639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/9059675439.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 5264 bytes
SHA-256: 2bdde63a24f31719d5cbed6871bae9d22f91006f6e049f8b09a66e509177f0ba
font_01_sfnt_off00007510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7510 14464 bytes
SHA-256: 5749befe8a728d4dfbe2563df7385e52901bae5c338059b380faf76238d087e3
font_02_sfnt_off0000a2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B1 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c

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