Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e03ec2ba6a35b2…

MALICIOUS

PDF

70.4 KB Created: 2020-08-22 16:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cc9e569f33c57e9854a1ea92be2075a3 SHA-1: f9245e84c436cdb1923d17be3a100b6f3aaf427a SHA-256: 38e03ec2ba6a35b224918c32f32044451a10aa58283f47d3706422e57952d3fa
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, ttraff.cc, which is likely used to funnel victims to a malicious payload or phishing page. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other links to PDF files hosted on Shopify, while some are benign, could be part of a link farm to improve SEO for the malicious content.

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/pify?keyword=bodyguard+full+movie++movies+counter In PDF document text
    • http://files.arielmoorephotography.com/uploads/1/3/1/4/131438111/pegogakedeza-rifegekuker-reritekinovijit-xudixubuwos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7961/5142/files/cookies_policy_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5079/3110/files/bmj_case_report_submission_criteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/b_o_t_ka_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/17792972768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/ariosto_orlando_furioso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/23772246313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8688/8601/files/network_cabling_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/35502587491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3897/2831/files/nugotifevonukafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/fadidakibak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/97920877839.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CF 5448 bytes
SHA-256: c3641dcee928210f1be6b4100cc625982a2f7e9753a043a1bad214b12b019919
font_01_sfnt_off0000b67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB67E 5552 bytes
SHA-256: 564dce1250dc99aed60f2f24feac7eeff852ca230fc7767cf60bcb074b7a0b11
font_02_sfnt_off0000c95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95D 13388 bytes
SHA-256: 38cfe1a309950c97059a9be4fed4ccc8ee639ffeff740fa59c211eefc3d40b86
font_03_sfnt_off0000f4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A1 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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