Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec6076a92c38dde…

MALICIOUS

PDF

58.7 KB Created: 2020-08-08 04:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b84fc41a394b0f953794439cc505f87 SHA-1: 021dc74514df2b81602dc86ce0574585d2cb0eb4 SHA-256: 7ec6076a92c38dde243149a6efbedd23f4737749efbf7eb256501b62cad0de11
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=blink+182+tab+book+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to lure the user into clicking this link, likely leading to a malware download or phishing page.

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.com/pify?keyword=blink+182+tab+book+pdf
    • http://files.magicnorumbega.com/uploads/1/3/1/4/131453247/jukisosajax.pdf
    • http://files.thegratefuldude.com/uploads/1/3/0/7/130776295/wevojiv.pdf
    • http://perep.brickbybrickfitness.com/uploads/1/3/2/7/132740214/93b13.pdf
    • http://files.stickystripz.com/uploads/1/3/1/3/131380728/reritejetiselim.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/97577403241.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/74948845548.pdf
    • https://cdn.shopify.com/s/files/1/0440/1315/8565/files/difference_between_afforestation_and_deforestation.pdf
    • https://cdn.shopify.com/s/files/1/0434/4971/2806/files/todoborofurojudip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5078/7231/files/fegujet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/american_english_file_second_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/lejamiwinapipufatamonikig.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/p90x3_nutrition_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/gagomot.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/balboa_hot_tub_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/bopapexokaduken.pdf
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/bamosedofirizapi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/kexelixerawaposiku.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_off00009f11.bin
94df5d9a7c2f202a86e98453f08832a9dcc92615fe3212ef727f985e7060a176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F11 5392 bytes
font_01_sfnt_off0000b181.bin
68eee1807ecd049f083a4d5737e58e54f39c09780bb2a76201c73205314dffa4
pdf-font-stream PDF embedded font (sfnt) at offset 0xB181 13828 bytes