Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a78e48fe7758d9b…

MALICIOUS

PDF

51.2 KB Created: 2020-08-22 01:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 872a15f03d80a4255f4dc1759a775719 SHA-1: 3af290ac4c570dac480a28362912e854f40966cc SHA-256: 4a78e48fe7758d9bdf2458c3a23f4a715bfb94408297591d7b57962b50a00056
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify domains, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is 'https://ttraff.com/pify?keyword=yellow+rice+nutrition+information', which likely serves as a lure to a malicious site. No scripts were extracted, limiting the analysis of further payload delivery.

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=yellow+rice+nutrition+information
    • http://wujoku.hannirosemindfulness.co.uk/uploads/1/3/2/8/132814439/bukuwojilegalin_vijukila.pdf
    • http://returuge.thecancerolympics.com/uploads/1/3/2/6/132683003/xujur.pdf
    • http://salan.lousrenew.com/uploads/1/3/0/8/130873995/zopetorapofi-jadir-xuravukomunux.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/hetalia_axis_powers_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63529720688.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/tibubumajotisuwo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/28407701037.pdf
    • https://cdn.shopify.com/s/files/1/0432/0054/4931/files/7827358647.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/42000742796.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/vevoxijexepuxopor.pdf
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/human_eating_lady.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/spyder_tl_r.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/pidevonozasoxozi.pdf
    • https://cdn.shopify.com/s/files/1/0457/7551/9910/files/bass_booster_pro_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0429/9427/0371/files/aafco_pet_food_labeling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0451/8805/5191/files/negative_prefixes_adjectives.pdf
    • https://cdn.shopify.com/s/files/1/0430/2589/1479/files/73513825108.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/attack_on_titan_episode_25_english_dubbed.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_off00007264.bin
c53ce64db4bdc6cce1009d41e88662f314c344f55e40305d84324dfd0b61d83d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7264 4784 bytes
font_01_sfnt_off00008297.bin
4206bef6fe89b6c1b1f73cdb8f0ea0649d2a697b3fd2f0d2542f7274e80f91d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8297 14984 bytes
font_02_sfnt_off0000b12f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB12F 4324 bytes