Malicious PDF — malware analysis report

Static analysis result for SHA-256 acba2e63b4b6bb42…

MALICIOUS

PDF

61.4 KB Created: 2020-08-07 08:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 511b0c5ec4027990c4f8528d7ff32b5e SHA-1: 2f1b8c102bbd40af3b66c0c7634d0b4c5d20176b SHA-256: acba2e63b4b6bb426ccaaebf41883eb563dac72438b9cf11f2947ab1abd6171c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=aditya+hridayam+lyrics+tamil+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.ru/pify?keyword=aditya+hridayam+lyrics+tamil+pdf
    • http://zibali.bbshopdesigns.com/uploads/1/3/2/6/132695569/zavunevozor-besak-pizif.pdf
    • http://files.azrya.com/uploads/1/3/1/1/131164387/wulebonuwu.pdf
    • http://files.creativegeniuswithin.com/uploads/1/3/0/7/130775974/b3bc0ca53090bda.pdf
    • http://files.ohleev.com/uploads/1/3/0/9/130969172/konununos.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/33799145601.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/kagesifegubugexoluvoba.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/batik_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/go_back_to_old_twitter.pdf
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/masuvotofugiligigujawuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/vezonevusozobimofu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6835/0873/files/didigafabanum.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/92691531892.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/jusefatezebej.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/sepitaragugusotiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/pokerogejas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/pubowetafevixun.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_off00009303.bin
0cb30c9bb454b7ef71e5c4abd71b9c0b6f112cdd0add5fc01da793387c4d32a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9303 5484 bytes
font_01_sfnt_off0000a587.bin
353bb69ae752dfe49b2f00895de02009d9e9d621a37d2427a37dcee8d1d69671
pdf-font-stream PDF embedded font (sfnt) at offset 0xA587 11220 bytes
font_02_sfnt_off0000c24b.bin
99854f1013d4ad203f81b4a489ae3b5b63544adb879ee042a1f3820f6196fabe
pdf-font-stream PDF embedded font (sfnt) at offset 0xC24B 12384 bytes