Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea9f59d52cebf07…

MALICIOUS

PDF

53.9 KB Created: 2020-08-07 01:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24fe3b7debc7f5a85a8f0b4bacc1ed6a SHA-1: c2d2b9209fb20fdfd3b23d59d6d479170a2a0e24 SHA-256: eea9f59d52cebf07acad97d6107af07a90ff18b33025460989d2951e782e96dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=thematic+apperception+test+pdf+download', likely leads to a malicious download or phishing page. The presence of numerous other links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to attract victims. The ML classifier also strongly indicated maliciousness.

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=thematic+apperception+test+pdf+download
    • http://pamotopon.sdesignsgraphicarts.com/uploads/1/3/1/3/131381204/bolobotokafu.pdf
    • http://files.degustationwithoutborders.com/uploads/1/3/1/6/131637362/4335105.pdf
    • http://vakadad.masonluke.com/uploads/1/3/0/7/130738720/wufofuwoli_biloperopig.pdf
    • http://pidozaweb.amodelbuiltonfaith.org/uploads/1/3/1/0/131071157/3156078.pdf
    • http://files.wawahistory.com/uploads/1/3/1/8/131871850/wekatu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2557/1733/files/29206552827.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/57100989713.pdf
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/the_last_stand_union_city_hacked.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/85445360267.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/intro_to_mineralogy_nesse.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/76471076203.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/55933067027.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/bafitipaxasiriwiboluzawiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/lujonev.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/minecraft_xor_gate.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009590.bin
d293e8c571c9cbe2144e27675a98749d50951e37bd9820415534ada4f21c2fac
pdf-font-stream PDF embedded font (sfnt) at offset 0x9590 5436 bytes
font_01_sfnt_off0000a7ee.bin
e1eb2699040b32236c5693c831d19cf0157e87a5dc429e775a1386f26d81c9b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EE 10312 bytes