Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bfe224e7cfc8c8…

MALICIOUS

PDF

37.7 KB Created: 2020-08-18 15:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b50bf02bd48a9fb3e05aaa3d36515ac SHA-1: 6564da6dff604cec1e404d6b94c9fe735e31cc1a SHA-256: 72bfe224e7cfc8c8503a07609dd453065c83cf41d6140b262328c8195f29f9b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though malformed, suggests a lure related to a 'journey map template ppt'. The presence of a link farm and a malicious redirector indicates an attempt to direct users to potentially harmful content, likely for phishing or malware distribution.

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=journey+map+template+ppt
    • http://files.stjohnsdunellen.org/uploads/1/3/0/7/130775309/wodoriduj.pdf
    • http://files.heartsonghomestead.com/uploads/1/3/1/4/131453177/bafaxirige_xudipawofowo_kokibolo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/35373199415.pdf
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/sotusagematevenuduxime.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/wazenebufajupepojajexun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/52842033802.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/96147988099.pdf
    • https://cdn.shopify.com/s/files/1/0437/4488/6936/files/xasesogikaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/mediastinal_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/article_370_and_35a_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/jobuxezen.pdf
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/raju_bhai_full_hd_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/57121318073.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_off000056a1.bin
08a9ab31cd9f50db80e994e414a90d567668b5c201a5e140fb41e20282ddb666
pdf-font-stream PDF embedded font (sfnt) at offset 0x56A1 4880 bytes
font_01_sfnt_off0000672d.bin
e28db10dbe3fc3f00cb04a27703e0eb2ba7ab7a6d0115c7329a6f5979f8f0219
pdf-font-stream PDF embedded font (sfnt) at offset 0x672D 10260 bytes