Malicious PDF — malware analysis report

Static analysis result for SHA-256 f985f19b7e57df09…

MALICIOUS

PDF

122.1 KB Created: 2020-08-03 18:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57ac9f0a634eaf49187c32a090c19e7b SHA-1: 62a17c3e0042682a66313b74a88d1597d5aa688e SHA-256: f985f19b7e57df096e407ba60ab15544095fdac5f2d4443ac4476d2a64e514c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=el+alienista+caleb+carr+pdf+descargar'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. These factors indicate a malicious intent to redirect users to 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.com/pify?keyword=el+alienista+caleb+carr+pdf+descargar In PDF document text
    • http://files.gemma-browne.com/uploads/1/3/1/4/131452904/vaziwaduvikalovozom.pdfIn PDF document text
    • http://files.kofc3570.org/uploads/1/3/2/6/132682785/vesenumusinu.pdfIn PDF document text
    • http://files.zestnaturalmedicine.com/uploads/1/3/2/7/132740352/sanagevim.pdfIn PDF document text
    • http://files.confed-europia.eu/uploads/1/3/2/6/132681694/683038.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/1/0433/5956/8027/files/72409693212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9081/9739/files/lojudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/92349526943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/81718029202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/direkirokedisano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/zumdahl_chemistry_8th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/vuses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/4119739528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4387/1127/files/taxaxekufoxikogofuvapuziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/setikunidalugigonalona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/waveposa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/80163498331.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 7

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_off0001a07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07D 5420 bytes
SHA-256: d665ce24300e8c9e25abad0c89273c70fbb12c7b30bc703c7c357cea26d84fab
font_01_sfnt_off0001b2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B2F9 11708 bytes
SHA-256: 021c9b7187ee27b58732802714e9e50fb7d176c7c45603ee68b0676f6acbafd8

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