Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a3be4a432cccf3…

MALICIOUS

PDF

53.6 KB Created: 2020-09-01 00:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b55068c7bf4532d0d2d508ff3f3c7e2 SHA-1: 9968f869cd12ffcc8c787479805fa85b8ccbf8a5 SHA-256: 90a3be4a432cccf300e007b2f42c28e32bd6877f69a6d0806c5c951ecb0eca90
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented as a download for a personalized astrology app, indicating a social engineering lure. The file also contains a PDF link farm heuristic, suggesting it's part of a larger SEO manipulation effort to distribute malicious content. No scripts were extracted, but the primary malicious activity appears to be redirecting users to a potentially harmful site.

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=co+star+personalized+astrology+app+for+android
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/vojirerufubivedikuxodini.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/sutebekoxaka.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/color_street_scavenger_hunt_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/rosetta_stone_chinese.pdf
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/44624799640.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/nuxojekafoz.pdf
    • https://static.usrfiles.com/ugd/8127dd_c680e0dac5a04c89b07e29a3fe8090c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_48d56d99f5db44099dd19650b14b9f03.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af3265543474d41b4bdf191b94d007a.pdf
    • https://static.usrfiles.com/ugd/b8c837_49f50439a2954bceb8847135f482ab26.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f2.bin
d5f6722b09770cb136a0bdf30f1fb3110e32c8004e770704459cad1cbb688b50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F2 5172 bytes
font_01_sfnt_off000072a1.bin
21cd79bd208e8426e6288689fa954ce882c233bc246f82a9a74150a308ff40af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 5244 bytes
font_02_sfnt_off00008159.bin
a62cbbd43fd75cf5ccccf13e7cf18dfcf0981732b5e7f2faa9785680d43b22f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8159 10776 bytes
font_03_sfnt_off0000a66c.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA66C 16036 bytes
font_04_sfnt_off0000bad4.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD4 4324 bytes

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