Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c0fc327b04c177…

MALICIOUS

PDF

40.7 KB Created: 2020-09-02 09:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18b26d06d416e4b5203c64cd4932d37f SHA-1: 5cc04423660a60f22112793c3ad83fb697250ee3 SHA-256: b2c0fc327b04c17759b6a4eef58a4ce6ffc79e2e132aa374b66341da99598b52
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=smackdown+recap+bleacher+report+winners', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or engage in SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/wix?keyword=smackdown+recap+bleacher+report+winners
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/zefana.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/68205582316.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/47435614461.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/lilaxaxuburupofizomikasop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1269/2895/files/impact_of_capital_expenditure.pdf
    • https://static.usrfiles.com/ugd/136d07_43bcc7815fb24ce7a939ad298a9629b4.pdf
    • https://static.usrfiles.com/ugd/c33cdb_2f8bd1553a2442a99801a1e9eb6a9329.pdf
    • https://cdn.shopify.com/s/files/1/0429/7034/9731/files/begum_jaan_movie_vidya_balan.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0636/files/1654174846.pdf
    • https://static.usrfiles.com/ugd/0c41e7_b8e25501fc3248fb8279a7300af30b75.pdf
    • https://static.usrfiles.com/ugd/197ed4_a48463997c1c4cf795e17a851589943a.pdf
    • https://static.usrfiles.com/ugd/ce14f3_fff0bc619ba34075bbdb65380b49f953.pdf
    • https://static.usrfiles.com/ugd/b58d21_64295593c4c3434280606de6597bda89.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_off00006143.bin
8a014877242387928a6693eb106b1be518356eb6f11f08ecc975171f1f296fd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 5712 bytes
font_01_sfnt_off0000748c.bin
1f266f86259274394dd4e0131239aeecb9ee4294fbc3d0d28854b5def73bf096
pdf-font-stream PDF embedded font (sfnt) at offset 0x748C 9828 bytes