Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42bb25161644949…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 12:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3094a2843122d1501e7b2d78d33c2baf SHA-1: 6dfad1710cf89822df6480579997ba2fe9354990 SHA-256: b42bb251616449498ddfb83c375a42920facd9e0b5c66268caeb74190f2215be
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one critical heuristic firing indicating it points to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.ru/pify?keyword=automatic+writing+machine+project+report, which likely serves as a lure to a phishing or malware distribution site.

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.ru/pify?keyword=automatic+writing+machine+project+report In PDF document text
    • http://files.abbi.ca/uploads/1/3/2/8/132815388/ec4634d5fb6857c.pdfIn PDF document text
    • http://files.wrighteau.com/uploads/1/3/1/3/131383456/jelefujopagawugud.pdfIn PDF document text
    • http://rabej.sexualharassmentwebinars.com/uploads/1/3/1/8/131871674/datuzarurorop_dazidiw_gezasawor.pdfIn PDF document text
    • http://files.spracklenpainting.com/uploads/1/3/1/3/131379699/4311204.pdfIn PDF document text
    • http://files.bestfriendsdogtraining.ca/uploads/1/3/0/8/130813643/1621126.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/1/0434/1297/9869/files/fosupisawuvuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1083/3058/files/because_of_you_by2_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/augusto_de_campos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/gipubatunurepezuberez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/petofamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/wuketizilir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/twist_of_fate_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/82238443018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/slope_protection_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/69209764289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/27851610170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3073/1173/files/ksrtc_bus_ticket_format.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_off000062a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A1 5292 bytes
SHA-256: 17dac33918b2be15def67284fe77c3f9fa1fd5e4e96ba61e7e6e51a7577f8df6
font_01_sfnt_off00007487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7487 10192 bytes
SHA-256: 44ba22219e101dce112ec85d329c3b386e11be11f6716cbd7e24b9494f0e96aa

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