Malicious PDF — malware analysis report

Static analysis result for SHA-256 d631a5e0af98b418…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 11:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c07f22b90e8e8cde70791910072c901f SHA-1: c1f5d75311d40bcbc5ff775c80d0f16c23ef37f9 SHA-256: d631a5e0af98b4180e08f3a10c6068a73e53b7b428ff2eedf7f6ff02f59a36fa
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a song download, which is a common social engineering tactic. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and embedded URLs, including the primary malicious redirector and a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or distribution.

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.cc/pify?keyword=manikya+malaraya+poovi+song+download
    • http://zutejuti.theridingtherapycenter.org/uploads/1/3/0/9/130969280/719d00f.pdf
    • http://files.deadbeatphotography.com/uploads/1/3/2/6/132681517/kisolokexusibubovune.pdf
    • http://vijoleg.wundergrubs.com/uploads/1/3/1/3/131380086/dawukitelun_rawozotuvafer.pdf
    • http://files.sasksws.org/uploads/1/3/0/7/130738513/2251675.pdf
    • http://kexowe.nicolainickson.com/uploads/1/3/1/0/131070152/6556769.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/palutofiferividagidozi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6648/files/fuzowuwixufekige.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/67222999658.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/51242127518.pdf
    • https://cdn.shopify.com/s/files/1/0430/8097/4490/files/nevabaxelos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/mean_median_mode_examples_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/reporte_indigo_telefono.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/jumutusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/math_for_data_science_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/aafp_feline_vaccine_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/4175/8101/files/behaviour_guidance_plan_template_childcare.pdf
    • https://cdn.shopify.com/s/files/1/0461/7099/6889/files/sample_form_affidavit_of_desistance.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_off00005367.bin
4fae0bdd22ca5baebe01ae9d7a51b6cf0015af3a9105b901b34daaab7777d305
pdf-font-stream PDF embedded font (sfnt) at offset 0x5367 5604 bytes
font_01_sfnt_off0000667d.bin
5d283f464be7b4325e0806a386aa9f167a77bacd0b21e2c1bbe6cae05bace6b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x667D 14712 bytes