Malicious PDF — malware analysis report

Static analysis result for SHA-256 59786630ff94454f…

MALICIOUS

PDF

45.6 KB Created: 2020-08-29 17:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cc96c69f4cbbe48d9eb198b88005b5b SHA-1: 98c333679e0eadbe791ad5935449adfefd06ef00 SHA-256: 59786630ff94454f946c3efea67f92f2c4f78f7c02b0e3ceae1bce46d84ffbd2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. The document body, though heavily obfuscated, also contains this URL, presented as a lure for HP printer drivers. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious link. 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.club/wix?keyword=hp+laserjet+pro+m402dn+drivers
    • https://static.usrfiles.com/ugd/b8c837_311dbce3144d43c98b3106dcf7d0116c.pdf
    • https://static.usrfiles.com/ugd/08fe48_ea58fc8ddf30489fbb941c2fa300716f.pdf
    • https://static.usrfiles.com/ugd/c12414_48d17cdaf18b4dc89437fb0137bcb224.pdf
    • https://static.usrfiles.com/ugd/b8c837_e140007085bc436899dd611ba47cae93.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1412/files/gluten_free_meal_plan_for_weight_loss.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/66409243423.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/xavuninagidose.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/epic_seven_selective_summon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/4_times_table_worksheet_printable.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/47417098770.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/90215275871.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5986/files/61262134988.pdf
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/tofupofi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/mathswatch_answers_multiplying_fractions.pdf
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/xoxulebafitudisijovikikup.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/84653714655.pdf
    • https://cdn.shopify.com/s/files/1/0432/9829/1870/files/black_desert_mod.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_off0000658b.bin
ebf662058387d7cafea3709c4c21c1d1b504ce0c17c4cf9e3dd414b9d5fdf926
pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 5352 bytes
font_01_sfnt_off000077a8.bin
edc44aff1c258fdc8b9dbdaf48d03fb30d323053290d826ebf96ac95acd70902
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 10376 bytes
font_02_sfnt_off00009b1f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1F 4324 bytes