Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09eadb7288238d3…

MALICIOUS

PDF

66.5 KB Created: 2020-12-27 18:29:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ad261854d698c30d36f9c4de8bf11aa3 SHA-1: e71449833ace4455ee0719c1586d175298ac0d12 SHA-256: a09eadb7288238d3db431733890ea6a7fef11df693cf3bfe8002f1120dadbfe6
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a lure related to a "Blaze tv app not working on samsung tv" issue, which is a common pretext for phishing or scam attempts. It embeds multiple external links, with one pointing to 'trafffe.ru', suggesting a malicious redirection or phishing site. The presence of a PDF link farm heuristic indicates an attempt to generate SEO traffic or distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=blaze+tv+app+not+working+on+samsung+tv PDF link annotation
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/7007845.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/4445766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486563/normal_5fb5ef821c986.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/ponujomawosoveja.pdfIn PDF document text
    • https://cdn.sqhk.co/xafileme/TFvjmdR/frontier_justice_return_to_the_wild_west_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jomurozop/eidA4ja/fofumofuxutapedowikowenul.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/2331526.pdfIn PDF document text
    • https://gugabezari.weebly.com/uploads/1/3/4/5/134577353/1189028.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/6237950.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/tigovatolis/conference_program_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/zetovolefuguloru.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/hiding_from_serial_killer_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/gmail_for_windows_10_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1448a58-f7ef-418e-ac21-9e2b2084b1f1/kitonuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81153258-cac8-47a1-9d6c-dbcae6f8555e/64317353705.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77F 5452 bytes
SHA-256: 3b21990f948df32b1fe4b6b81ba06633c07a411c400dc13c553877d9b0c8582d
font_01_sfnt_off0000da1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1D 10168 bytes
SHA-256: 89512dded753f15e5f8970d51480df8932cab3a0b2fc15c896852d9f2505dbb9

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