Malicious PDF — malware analysis report

Static analysis result for SHA-256 62590509163112cc…

MALICIOUS

PDF

62.1 KB Created: 2020-08-26 22:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab0c2b351bc209c4fb826879c8bc0175 SHA-1: 365b47b0942373d93f197ff4478ec77ad1324b4c SHA-256: 62590509163112cc2094b7cbd44d3ebfd1795b94f726795d580594effce7243f
154 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, https://ttraff.me/pify?keyword=pioneer+fh-x720bt+manual, is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting a tactic to generate traffic or distribute further malicious content. While no scripts were directly extracted, the presence of malicious links and the ML classifier's high confidence indicate a malicious intent, likely to redirect users to harmful sites.

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.me/pify?keyword=pioneer+fh-x720bt+manual
    • http://files.redcoyotecyclery.com/uploads/1/3/0/7/130775342/luzixawege-befuvejodafa-zubulexokenax-sajevareme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/ruwedisoxitiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/boxok.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/83826293359.pdf
    • https://cdn.shopify.com/s/files/1/0439/7511/4910/files/vajutilolofejolijodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/sawezib.pdf
    • https://cdn.shopify.com/s/files/1/0440/6598/0581/files/7844247596.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/pusikigafefuruwarukim.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/metric_length_conversion_chart.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/fenufejigezarabukoxapefos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8088/4129/files/64747828256.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/vovoxesebovegi.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_off0000a137.bin
41a5c764430292f2221ebeb0704208b0fe6722298ad32ff57b6d3274b3b3b9d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA137 3036 bytes
font_01_sfnt_off0000abff.bin
2745342e449ba40b3333651ad6a5f7166279a084a20d7313bee9d7d3d2871e66
pdf-font-stream PDF embedded font (sfnt) at offset 0xABFF 5424 bytes
font_02_sfnt_off0000be56.bin
761ec419fe8d16191ee59766e086689fbffc100453be043932c7821808d20f6d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE56 14680 bytes