Malicious PDF — malware analysis report

Static analysis result for SHA-256 18bf77e399b62228…

MALICIOUS

PDF

69.3 KB Created: 2020-08-29 17:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a595b420f09589e710ecf9cad026fffa SHA-1: 8dc28be0593b043bf495bd7f7b419919914923a4 SHA-256: 18bf77e399b622288991b7d916f4bef0252b23c472101964da28731b7b17926d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.com/wix?keyword=glory+of+the+hero+guide', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for traffic generation.

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.com/wix?keyword=glory+of+the+hero+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8344/7968/files/pefow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/winrar_archive._rar_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/arch_models_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8565/files/5321020956.pdf
    • https://cdn.shopify.com/s/files/1/0434/3729/3724/files/buzulemodegamajamiperufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92313200312.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0517/files/bedave.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/53727250163.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/93050218160.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8831/files/html_align_image_center.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/kifebufibazud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/cbt_worksheets_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdf
    • https://cdn.shopify.com/s/files/1/0464/7301/9560/files/educational_sociology_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/pixoleruse.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_off0000d388.bin
f9d9b32c6a614a8ecffd4507246fd9a11fef4ecdf82a296a07d491fd0a476364		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 4912 bytes
font_01_sfnt_off0000e447.bin
a268ebda67a7b582edeaa1d961ffb9d3e8ff7129506924db4f810de47ca429f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 10524 bytes

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