Malicious PDF — malware analysis report

Static analysis result for SHA-256 7004f5e01798193c…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 22:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0a20b32b0f7808a80cd94860933376d SHA-1: 9d5656cd627d66681a44012aa660fb7df2863d53 SHA-256: 7004f5e01798193cb915de838fabe1f9784f4fc4c43cd9ef7c529e02ed54dc0b
154 Risk Score

Malware Insights

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

This PDF document uses a lure of a "Bostitch 6 gallon 135 psi air compressor manual" to entice users to click on embedded links. The primary link, https://ttraff.cc/wb?keyword=bostitch%206%20gallon%20135%20psi%20air%20compressor%20manual, is identified as a malicious redirector. The document also contains a large number of other PDF links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of malicious redirectors and the link farm pattern indicates a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/wb?keyword=bostitch%206%20gallon%20135%20psi%20air%20compressor%20manual
    • http://files.livingheartyoga.com/uploads/1/3/0/8/130814339/3d427a90ff8.pdf
    • http://gupimat.indiracreative.com/uploads/1/3/0/8/130874330/zepibekanitulu_wexepilugawidot_gamukuvemej.pdf
    • http://files.georgerichards.net/uploads/1/3/0/7/130776757/gewotef-xafodepipi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/mobabawofipekonavopemotik.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/55434514127.pdf
    • https://cdn.shopify.com/s/files/1/0437/4796/7130/files/pizujufenuriwadozisuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/aptitude_topics_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/54878288862.pdf
    • https://cdn.shopify.com/s/files/1/0434/7081/5397/files/lomojelinexemezejas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/mewusebetijurupidow.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/gungeon_face_melter.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/icelandic_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/55729447030.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059f5.bin
13125791124993254157dca9feceaa5321602e169cd0aac2a05aa2d55de8c8c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F5 5772 bytes
font_01_sfnt_off00006d63.bin
e0553a532a6e48fcddd5b69f28916ac3c0c0c870ac044c8bb80b69fe47a666ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D63 10704 bytes
font_02_sfnt_off000091f9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F9 4324 bytes

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