Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1626d1a63c071a…

MALICIOUS

PDF

40.2 KB Created: 2020-08-15 05:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83f62e2eb461ac2aca86eedc7bffd2fa SHA-1: 0079cd20ebb8fc3068e3050ae3b6659d6874b6e7 SHA-256: 6e1626d1a63c071ae3dff641379e80f99e3c3c74ea22401d229bb11d9d796c47
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to Shopify domains but are likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL, https://ttraff.ru/pify?keyword=anime+freak+apk+baki, is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains this malicious URL and other PDF links, suggesting a lure to download potentially harmful files.

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.ru/pify?keyword=anime+freak+apk+baki
    • http://vetejuge.platetrotter.com/uploads/1/3/1/4/131454065/zujujevuwevefa.pdf
    • http://files.howigotcustody.net/uploads/1/3/1/4/131482952/2cf65fba9d0c1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0440/6067/2165/files/11371479507.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/empirical_formula_and_molecular_formula_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/63055524639.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/dikajujosenediwepananopib.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/gikigewiredopuzoxago.pdf
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/72544695479.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/77152681447.pdf
    • https://cdn.shopify.com/s/files/1/0440/6912/6309/files/vekibu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/elder_scrolls_oblivion_pc_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/3217316110.pdf
    • https://cdn.shopify.com/s/files/1/0437/0920/2597/files/75562256343.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/what_is_fractional_distillation_gcse_answer.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cf.bin
2034220b5e478c355e55b756a5421b71f114056750ca6a21284a8d07a5d028be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 5028 bytes
font_01_sfnt_off000071ce.bin
0bc066a7495420f7ac91ee619d0bb77707297d65f09877f8f2a2f2f7c071aa92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CE 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.