Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f3333422bd7c57…

MALICIOUS

PDF

67.1 KB Created: 2020-07-31 17:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 201e7dca340745a1ab6240e86666ae01 SHA-1: 62bcc9232d1666dd2b7a1a1104716c15f3aa795d SHA-256: 07f3333422bd7c57a1f8a9d9d5d3aabb05f17015c9653b3d810608679c914b81
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded URLs, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or content distribution network. One URL, 'https://ttraff.com/pify?keyword=icp+discography+kickass', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or heavily obfuscated, but the presence of numerous links and the redirector URL point towards a malicious intent, likely related to SEO manipulation or redirecting users to 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.com/pify?keyword=icp+discography+kickass
    • http://files.doordoodles.com/uploads/1/3/0/7/130775135/nitokez_lewewar.pdf
    • http://files.anitariddlemsnportfolio.com/uploads/1/3/1/4/131453595/b67472a813dbf5c.pdf
    • http://files.emdreiling.com/uploads/1/3/2/6/132682039/nesamizaga_sanuburajokuzo_suvini_xurakaru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/94491685124.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zikoraj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/6480593021.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/29663318375.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/kivod.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/beniwogaragugav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/popezivubuto.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/genasapenojajetame.pdf
    • https://cdn.shopify.com/s/files/1/0430/6567/1833/files/rebevuvajoruxelune.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/46283009518.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_off0000c9ee.bin
cbe11ad644cf3f7bcc5c8c1bb81253c2524d396ed408857f6fa1ca6adba1bf20
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EE 5408 bytes
font_01_sfnt_off0000dc55.bin
bd482e7fee2c05f993437cba7346fba5017d929ec821284d1ed730ab805489fc
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC55 10348 bytes