Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee310ae7a770a2bf…

MALICIOUS

PDF

116.6 KB Created: 2021-01-11 15:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0fd5a622099b89f6abb2d9e517dd0e52 SHA-1: 330438ac873f0f16c979fa079dee104075536b85 SHA-256: ee310ae7a770a2bff77da13251cc1b8778f900edccb7821e8d6a0590916925fd
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm structure. The ML classifier and ClamAV detection strongly suggest this is a phishing or malware distribution document. The embedded URLs, particularly the one pointing to 'ggtraff.ru', are indicative of a phishing attempt designed to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://ggtraff.ru/123?utm_term=torsion+bar+unloading+tool+oreillys In PDF document text
    • https://cdn-cms.f-static.net/uploads/4423452/normal_5fc088722da8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408863/normal_5fe153d7acddb.pdfIn PDF document text
    • https://site-1179818.mozfiles.com/files/1179818/csme_dr_horton.pdfIn PDF document text
    • https://fobizolavavoka.weebly.com/uploads/1/3/1/4/131406440/87425.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/nokiva/fifa_world_cup_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/20546602860.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/the_beatles_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/sony_bravia_43_inch_4k_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/xadotuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/80972159268.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/58816778681.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/east_gaston_high_school_mount_holly_north_carolina.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/37424883884.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17080 5184 bytes
SHA-256: 51a869f3bc6c280a6e979098485adaf049c0339fbe0b2f2579a2b76a2730c1eb
font_01_sfnt_off00018234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18234 13720 bytes
SHA-256: fe50d848637f052313336bc10fa19e303a726a0efb4b1615c8467990254bfda1
font_02_sfnt_off0001aff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AFF9 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61

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