Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f7346035ead11a…

MALICIOUS

PDF

54.9 KB Created: 2020-09-02 20:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66309ea536d8a259a678fe3170cd8154 SHA-1: 1827825a9e408acfbee72bf537a308b650f12f95 SHA-256: c2f7346035ead11acc2fd1e861d26fd656a9e9d26064b129398f3a60ac5cf378
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL found in the heuristic, suggesting a deliberate attempt to direct users to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or distribution mechanism designed to obscure the ultimate malicious destination.

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/wix?keyword=friend+philosopher+and+guide+meaning+in+bengali
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/tivezopozal.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3786/files/spring_framework_4.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/i_9_list_of_acceptable_documents.pdf
    • https://cdn.shopify.com/s/files/1/0432/4756/7010/files/jutixiwuturutedulikumev.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/54286110104.pdf
    • https://static.usrfiles.com/ugd/2ca22b_16d66598177248adb66a255f42434278.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccf468dcf2bc49ac84922b3fc48405da.pdf
    • https://static.usrfiles.com/ugd/c0fca2_ca4a1eeb4da34f94af0f92a861a11734.pdf
    • https://static.usrfiles.com/ugd/227d0f_496c700789d74bf1b1d6d739d6746f23.pdf
    • https://static.usrfiles.com/ugd/b52961_48ff5104bda641f2a521b937041affc9.pdf
    • https://cdn.shopify.com/s/files/1/0435/6207/4261/files/3433537146.pdf
    • https://cdn.shopify.com/s/files/1/0460/3379/7279/files/wufuwusem.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/types_of_interest_groups_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0461/1398/0580/files/jofoketinuregibipibuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6165/files/11524032477.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d1.bin
35c0ff0ba7a9a5c0c70da00f847539543a729c513e13e0dd759b025658386d5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x69D1 5272 bytes
font_01_sfnt_off00007b76.bin
8e80e4dcbd82f855df13be273df6f5395712b574b890ca460b649407600ba0dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 11068 bytes
font_02_sfnt_off00009de3.bin
65f42af988fb839a948b2064812c357d57271957558ce9f0459d23e76229dc7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE3 9956 bytes
font_03_sfnt_off0000c00e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xC00E 4324 bytes