Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49836fd7e41f781…

MALICIOUS

PDF

45.6 KB Created: 2020-08-27 22:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91b0e2ae365b5e14d4ed82a81e5d872f SHA-1: 1140e814259e2a5bb4b9654e8c2aee215beb752c SHA-256: f49836fd7e41f781c158a7b0ea07b1d09f1136847d2bb504abd1bd0c5e4ccfc3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL, https://ttraff.com/pify?keyword=design+portfolio+template+pdf, is designed to lure users by impersonating a design portfolio template. The document body, though heavily obfuscated, contains references to this URL and other benign-looking Shopify links, likely to mask the malicious intent. The presence of numerous links suggests an attempt to distribute malicious content or phish for information.

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=design+portfolio+template+pdf
    • http://visule.fitkidtext.com/uploads/1/3/1/4/131437736/5203652.pdf
    • http://files.trustworthylegalservices.com/uploads/1/3/1/6/131637570/pozoz.pdf
    • http://xoxek.elementalascension.com/uploads/1/3/0/8/130874262/7635420.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/acrobat_vip_helpx.pdf
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/zogusizunagizunukukal.pdf
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/tibia_paladin_weapon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2005/0855/files/49716398579.pdf
    • https://cdn.shopify.com/s/files/1/0429/9292/6873/files/20393586112.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/janusibagofajarewokuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/zuwotowaxowasenupowuvuvuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2261/files/35930942734.pdf
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/52621931991.pdf
    • https://cdn.shopify.com/s/files/1/0463/4650/2306/files/15632512333.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/pathogenesis_of_type_1_diabetes_mellitus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/295298214.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_off000066bd.bin
7db91e34e6168766463bf36fc2e29be0fe3f3991631dbb3e601a6bed465e91a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x66BD 5148 bytes
font_01_sfnt_off0000781e.bin
bd588532cef0bde7edef757630f576395110f0722f19a4296ec7be3048b593e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 10344 bytes
font_02_sfnt_off00009b3b.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3B 4324 bytes