Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a587a45484729e…

MALICIOUS

PDF

66.2 KB Created: 2020-11-09 22:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 07a5849dd955c52fb18d85e011de132c SHA-1: 9b58a0006aa44f2a1828d7de0c42a1ee87c8c381 SHA-256: 46a587a45484729e982b5e8324ff1ae74a5717d969fd1203761118c4c4e05d8e
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it's a malicious redirector and part of an SEO link farm, designed to lure users to malicious sites. The embedded URLs, particularly 'https://gettraff.ru/123?keyword=offer+phase+ext+meaning+usps', are flagged as malicious redirectors. The ML classifier and ClamAV detection strongly support its malicious nature, likely for phishing or distributing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?keyword=offer+phase+ext+meaning+usps In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f8b478d56cc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450734/normal_5f9f8f57bc820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f956f0fcf3f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5f8d0cb2f0cca.pdfIn PDF document text
    • https://lafibovuvi.weebly.com/uploads/1/3/4/6/134653173/b0820eab2e952f.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/kizovegok.pdfIn PDF document text
    • https://rujasuxok.weebly.com/uploads/1/3/1/6/131606047/4863913.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/nipawugifakemotomapixoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/jajijagusokoxaku.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/mutant_genetic_gladiators_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/gejimugijofozaf.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/algebra_2_mcgraw_hill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d1c1433-dffd-4071-936c-e3971700d100/why_achievement_hat_in_time.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/all_chief_minister_and_governor_of_india_2019.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_off0000c6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C7 5376 bytes
SHA-256: 04124d66de8db41ede647770ceaf87c9be420b30ee699feb5408ea4986c3b1da
font_01_sfnt_off0000d8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F1 10412 bytes
SHA-256: a8c550bf081533e16658b85fa89a2eda6ade4fb7e90ba59ac05f32bae031c533

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