Malicious PDF — malware analysis report

Static analysis result for SHA-256 1442d5a99a42d79b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-06 00:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35bec791ecc0e7f3ab087223c15eede7 SHA-1: 4dc3b05a5ccec40a8c31e48f10fa1600fe3a7a17 SHA-256: 1442d5a99a42d79b2215a2f0b33f4608cd3323d7aa2861271fcd75067845ca04
194 Risk Score

Malware Insights

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

The PDF contains numerous links to SEO-optimized PDF files, many of which redirect through a known malicious domain. The primary lure appears to be a link to 'Grau dos adjetivos em inglês pdf', which redirects to 'ttraff.cc'. This suggests a phishing or scam campaign aiming to drive traffic to malicious or deceptive content. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious redirector pattern.

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.cc/pify?keyword=grau+dos+adjetivos+em+ingl%25C3%25AAs+pdf In PDF document text
    • http://files.massagetherapyrelax.com/uploads/1/3/1/4/131455621/d41ab7c4dd.pdfIn PDF document text
    • http://files.truckbumperskins.com/uploads/1/3/1/3/131379296/7643825.pdfIn PDF document text
    • http://files.mistergteacher.com/uploads/1/3/1/4/131406811/a7941a027ec8.pdfIn PDF document text
    • http://files.chelseanoellephotos.com/uploads/1/3/0/8/130814652/fewupan.pdfIn PDF document text
    • http://files.waunakeefeedtheneed.org/uploads/1/3/2/6/132682790/e5da2f.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/1/0428/8738/1155/files/fitugotujomotuvoguvemat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8748/7395/files/zejasakanotezenakafonaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7649/9096/files/tetris_html_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/tilivoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/85134417945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8982/0838/files/only_the_lonely_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4008/6935/files/61760759993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/3444586113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/calculus_a_complete_course_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7985/files/nibaxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6378/7170/files/dexunebesotawipun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1431/4405/files/78994689095.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 8

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_off00006621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6621 5680 bytes
SHA-256: 8e27c52fbb623711b6a401cbf4a7bcbc326ca2a5b09576066e20082a6cabe700
font_01_sfnt_off00007930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7930 12108 bytes
SHA-256: 1bb03d0d3a0296d53331fd61ac82c759b9fa521d415341deab54e2600ec5b4f6

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