Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e94ce7f049bff36…

MALICIOUS

PDF

45.6 KB Created: 2020-10-30 05:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7e9b7cb70670655eaf162818f4fe5acc SHA-1: 98d32a2a469265360ca6554dc960ade51a7331a6 SHA-256: 9e94ce7f049bff36cda9c55782ff06e5aadb8cb272251c608f2dd23431d353cd
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'cctraff.ru' and 'weebly.com' domains, which are flagged as malicious or part of a link farm. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector findings. This suggests the primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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://cctraff.ru/pify?keyword=t25+speed+2.0+review In PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/8903445.pdfIn PDF document text
    • https://kubuwexujilo.weebly.com/uploads/1/3/4/4/134473085/sowodafevidugal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5f933d13500ba.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/6159949.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/5653360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f98e7f03583b.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/zibubax.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/jufun.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/1/0268/8227/7568/files/cctv_installation_training_courses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0509/2533/8784/files/wosujitanoditurixurabina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5413/3159/files/54496191499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3972/5994/files/wabavipuvaxaneruvejetopow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4536/2113/files/geguxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9746/4226/files/2020_ford_edge_titanium_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2367/0708/files/but_how_do_it_know_book.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_off000073cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 5244 bytes
SHA-256: 007cbcb5b2014cfabb47a72d38491faded68134d02d065908084e65a291744fb
font_01_sfnt_off000085db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 10532 bytes
SHA-256: bf7f0f46ea31b89cc58c66fca7df9b37e02e2fe3e6e6ddda3ce10a584622c3c2

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