Malicious PDF — malware analysis report

Static analysis result for SHA-256 61136dd502d7ce61…

MALICIOUS

PDF

46.6 KB Created: 2020-07-31 14:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5c53c7212bf4ac627b4bcb929b1674a SHA-1: 1df9d8417acd07475fbcbbea4bc369b87bd6a5e3 SHA-256: 61136dd502d7ce61c4b7b0ec5ac14c9f2ec936cbeb565b40deb9566078ad5648
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and link farming, specifically pointing to the URL 'https://ttraff.com/pify?keyword=a+noite+dos+mortos+vivos+livro+pdf'. This URL is identified as a malicious redirector, likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to a book PDF, aligning with the SEO link farm heuristic.

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=a+noite+dos+mortos+vivos+livro+pdf In PDF document text
    • http://files.sunsetairporttransportation.com/uploads/1/3/1/4/131437312/9096797.pdfIn PDF document text
    • http://files.metaburger.com/uploads/1/3/1/4/131406736/setezol_ninasijaru_lapifurasopi.pdfIn PDF document text
    • http://files.alessandrofanucchi.com/uploads/1/3/1/4/131453733/2174948.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/1/0433/4020/2142/files/41456825886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/nomolenazigojageragewul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3694/1215/files/90212673552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/34461709735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/keriwetovunuvulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/jozarusinifif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/tejaxodijijutirupibeligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/35665734539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/kasaxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/57255598749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/jukavawogugim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/45361766479.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_off00007310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 4816 bytes
SHA-256: d6ba7a0c5a75ac02505fb2302c23ea8fd5f5756646087078f22502ba2ed2692e
font_01_sfnt_off00008355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8355 13468 bytes
SHA-256: 9fca78bce0291d06df6a230faad95b2362a97ff156a6c8ea6b27dfd84da6003a

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