Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39345ee3604505d…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 11:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88228408c84aac59aa1ca9878fed319d SHA-1: de4a2ff0db7778186f5f1b2e2c53ae3cf12a4443 SHA-256: c39345ee3604505d017ec0bdb3d1a2c34a0fab9a4c75e3643dbc8b57ecdac5d2
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the URL and a deceptive title related to 'Barker college uniform policy', suggesting a phishing or scam lure. The presence of a PDF link farm heuristic indicates a large number of outbound links, many of which are likely malicious or part of a broader campaign.

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.com/pify?keyword=barker+college+uniform+policy
    • http://files.tamaraarmstrong.com.au/uploads/1/3/1/0/131070846/9151384.pdf
    • http://niruxot.restrefrig.com/uploads/1/3/0/9/130969754/f2d8a.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/research_article_review_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/wall_mount_hose_reel_with_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/whole_new_world_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/7059295483.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/82379340962.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0674/files/100_giza_cotton_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/jntuk_previous_question_papers_r16_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/remove_crackle_from_audio_audacity.pdf
    • https://cdn.shopify.com/s/files/1/0430/9601/5002/files/49607671519.pdf
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/xewarakerafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/37520542098.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/high_school_to_college_resume_template.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000534e.bin
d9c33e398769ce0115e4f0d69605e52b90686fdaf7a197a6bd3cd0a6d55ec77d
pdf-font-stream PDF embedded font (sfnt) at offset 0x534E 5176 bytes
font_01_sfnt_off000064cf.bin
fdde0e5484f0c9d3aab2b2a4628a411e6a3f3855fad30e4ae66facc9101effbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x64CF 2516 bytes
font_02_sfnt_off00006fe1.bin
2ade0a5954e0a4c9bd3c09b2cda3a5816577d86a646495653f7742a21456845e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 10404 bytes
font_03_sfnt_off00009385.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9385 4324 bytes