Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f2beac9edd8abe…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 19:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12f5cefd45937e8d77c41d93dd6fd2f5 SHA-1: aa6884ecfd083352dcdb3ffe25c7abcfd05b2df9 SHA-256: 80f2beac9edd8abedff59375738401c5378f08d41ff67ecc4f7723137552ed72
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body itself is heavily obfuscated but contains the primary malicious URL. The presence of numerous links, including those hosted on cdn.shopify.com, suggests an attempt to create a link farm for SEO poisoning or to distribute malicious content through seemingly benign platforms.

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=cen+sad+treaty+pdf
    • http://files.therhodeislandecho.com/uploads/1/3/1/6/131637150/kudugogetol-boxik-fuginemuboki.pdf
    • http://files.prettylittlethings.ca/uploads/1/3/1/4/131407148/nofamugamafatep-futovigo.pdf
    • http://faluxun.columbiapsychmd.com/uploads/1/3/2/6/132681352/db60e8bc.pdf
    • http://felomug.malibuatheart.com/uploads/1/3/1/6/131637016/xodumodomaju.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/bemitinukoremuner.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/chopin_ballade_2_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/sinubetexez.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/lajetexadifuzekumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/jekoguzekuxabavov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/3750223315.pdf
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/zifuvewumabuxuxeporiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/pabef.pdf
    • https://cdn.shopify.com/s/files/1/0436/9186/8313/files/6126765780.pdf
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/44687175931.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006141.bin
cdad144ee17a7cc982fcda0dde78ae8b320ca9ce95f34c77092bf154eed6f698
pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 5012 bytes
font_01_sfnt_off00007263.bin
c49afabda627a7316278569db21152d1f28a56983dbff0d8c7764cd6e0ea527e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7263 10580 bytes
font_02_sfnt_off00009620.bin
e5bafa7c97af432d4f861ade00cdf0cc3729ca82cc26e2ea94e8a2d9e8b6e98f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9620 17980 bytes