Malicious PDF — malware analysis report

Static analysis result for SHA-256 a583908bcf7629e5…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 23:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5389c010f581013b57da8c78ddbe990 SHA-1: 15c6097297c6b34243a4b961595d8672e8ce551d SHA-256: a583908bcf7629e5bde019bca6d57876bba2080271a8e5dff25d3f92a6f2b4a3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a helpful guide for merging PDF files, but the primary link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. This indicates a social engineering attempt to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=comment+fusionner+2+pdf+en+1+seul
    • http://gebimub.crimeandjusticepolicy.com/uploads/1/3/0/7/130776167/duvavusa_burixebekedo.pdf
    • http://files.renuartportfolio.com/uploads/1/3/1/6/131607023/toroma-lokibufozunamo.pdf
    • http://files.northwoodshypnosis.com/uploads/1/3/0/8/130874104/4906070.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/wojabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/anaerobic_jar.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/biology_final_exam_review.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/pre_bstc_answer_key_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/ponenojaxavemasizevid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/24137740311.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/19642305074.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/90513907042.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/jasazakiloparig.pdf
    • https://cdn.shopify.com/s/files/1/0440/0054/2878/files/24496973592.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/communication_networks_leon_garcia_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/4092/9957/files/samsung_refrigerator_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/78195975350.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/kikugopalofebikidana.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_off0000638e.bin
a7720819c3e3071f003e23077ba2357c1a50e98a3f482254dd573f568c6c9b30
pdf-font-stream PDF embedded font (sfnt) at offset 0x638E 5068 bytes
font_01_sfnt_off000074b3.bin
b7f41233427c401fa94f480c2733ea7e115c96d17e3cac711c8108ecbb3223d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 11672 bytes
font_02_sfnt_off00009946.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9946 4324 bytes