Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2e7f9682d82f16…

MALICIOUS

PDF

45.9 KB Created: 2020-09-17 23:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acea383f0a53a04dcc3ef29ba2f37b4d SHA-1: e655c92ffc09414225328d4788d8e82cdc54185b SHA-256: ab2e7f9682d82f16304e1acaaa83053c8f6e0342057e50b8018767a57742d87c
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary malicious URL being ttraff.club, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=ati+teas+study+guide+version+6+review', suggesting a lure related to study guides. The presence of numerous benign-looking Shopify links likely serves to camouflage the malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

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.club/wix?keyword=ati+teas+study+guide+version+6+review
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/ludupigikanik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/xapirinefanogaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/32159272770.pdf
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/61283991849.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/lightweight_concrete_materials.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/linked_list_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0459/6999/7984/files/google_play_services_apk_4pda.pdf
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/how_to_be_a_great_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/counter_strike_1._6_cd_key._reg.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/architecture_working_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/vicky_dad_blowjob.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0972/files/90161743173.pdf
    • https://cdn.shopify.com/s/files/1/0428/6326/3910/files/weather_radio_walmart.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_off00005dea.bin
ebe122652bd03f378d91848ce68c5c9628c28069e70542544700d119377088c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEA 5356 bytes
font_01_sfnt_off0000704e.bin
9239398fe59008930fb47514045a1118512eead1ef3e3e1b54db761c32e1dcce
pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 11180 bytes
font_02_sfnt_off0000952e.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x952E 16164 bytes