Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a0fd84f2c000386…

MALICIOUS

PDF

40.1 KB Created: 2020-08-17 01:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3fef966f0df1e2f1c37b910f1c9bef4 SHA-1: 85bb5125de2c429d4a606263414b71889dabf6dc SHA-256: 7a0fd84f2c0003868b4a0f668a8e6cbfa8d6f1f0f1869f5715516a2439f794b8
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector (https://ttraff.cc/pify?keyword=wallpaper++hd+for+mobile+3d). The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an attempt to generate traffic or distribute malicious content. The document body, though heavily obfuscated, contains references to URLs that likely serve as lures.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=wallpaper++hd+for+mobile+3d In PDF document text
    • http://files.number1hair.co.uk/uploads/1/3/2/7/132740352/duwesemi.pdfIn PDF document text
    • http://joxijomoj.davidsblakeslee.net/uploads/1/3/0/7/130776819/kevaditupuwiga.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/1/0451/4558/7877/files/budget_2020_in_marathi_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35035436777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/48531074347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/69606261367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/fimujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/62284163465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/navy_brag_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/gokudebimegapiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/gadejikaguteka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/xejusarobaxisirom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/goguzaziwifuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/7720775134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/personality_adjectives_exercises_elementary.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 3

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_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 5420 bytes
SHA-256: 399f610d5a70d669a760284881166de716b87fcc1b1c5843516db51d055b0fa0
font_01_sfnt_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 10112 bytes
SHA-256: bde55e9b7abedcc2c36fe1cc46b73c85250e058924ab866f88344e3f7dfca4f3

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