Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cccfa37b07716d5…

MALICIOUS

PDF

65.7 KB Created: 2021-01-11 23:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2f912bcf020bb04fc710ac911d775101 SHA-1: a656f68c343c313c22f83e51a9110af9e5aa2143 SHA-256: 9cccfa37b07716d522d10d3b747631654def180c4806ceb6e71eebac8f11d9f4
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to lead the user to malicious content, likely a phishing page or a payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/aws?utm_term=magic+cap+video In PDF document text
    • https://cdn.sqhk.co/raxoxawupej/cjjIgc3/pemid.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/gcjhigE/ninja_arashi_mod_apk_unlimited_life.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_5fb899587dff6.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/hfPb6JI/infinity_pool_cost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f9104b16b715.pdfIn PDF document text
    • https://cdn.sqhk.co/bafebolabefo/ZVDPjis/plane_control_surfaces.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467285/normal_5fa8d683d62f9.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/1RifTMc/nick_folk_kick.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/x8Mjbjh/hot_100_radio_station_spencer_iowa.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/391d9f195a0c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f919a2359ce8.pdfIn PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/sukekunuvevus.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/CCiiZ49/parrot_wallpaper_for_iphone_x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC627 5000 bytes
SHA-256: 262871b7717047d9c8805c7a40d90d29bc883ec1bc28f6a45eb4180678a90f65
font_01_sfnt_off0000d755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD755 10312 bytes
SHA-256: 6d68725f710809af15f896b3b1c39f43279777f724f448b6770f06c6c004e734

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