Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b539e7d71e7678…

MALICIOUS

PDF

62.4 KB Created: 2020-08-12 01:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c87ff94ebb6b9e934011830fe2481b9 SHA-1: 76f77f69b61b012432cfa291d5adb1aee4101201 SHA-256: e3b539e7d71e7678dc170438bdd7fe5ffc037d8f4e4fb45f3465c400b1463676
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bncc+download+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. No scripts were extracted, and the family is unknown due to the lack of further indicators.

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=bncc+download+pdf
    • http://sikamape.fremantlewaterbeads.com/uploads/1/3/1/0/131070420/kajodikerubo_goninosobuja_jixari_xitofozosur.pdf
    • http://files.beachcreekdoodles.com/uploads/1/3/1/4/131407284/wepek-mofarigejifan-zuneb-lepisovakeg.pdf
    • http://files.jessicaisserow.com/uploads/1/3/1/8/131856567/menegixivegi.pdf
    • http://fized.mariannesimonin.com/uploads/1/3/0/9/130969060/vejodunurulux-kuwatopetuxud-bijimubaduli.pdf
    • http://midubuve.hamptonlinks.org/uploads/1/3/1/4/131438268/a098d2aa56.pdf
    • https://cdn.shopify.com/s/files/1/0435/6089/4627/files/26780579653.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/risoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/rugixomitanirevataxanefef.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/versus_arthritis_back_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/85034265648.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kofuf.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/aashto_t277.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/numerical_methods_faires_burden_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/97217670501.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/game_of_thrones_season_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/42320449640.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/git_remove_merged_branches.pdf
    • https://cdn.shopify.com/s/files/1/0435/3143/6186/files/lesikozanemem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/18877031548.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_off0000b6cd.bin
8cebf46583e4cc689eea8e87ce63d40e3538c90f4057397d117ee598c8fcb14f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CD 5016 bytes
font_01_sfnt_off0000c808.bin
6113f951940f3e02fa305e0ce629803a62407db8aae9d9b490cd2bca7323542c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC808 10824 bytes