Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a1433542780f1b…

MALICIOUS

PDF

45.5 KB Created: 2020-09-04 16:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42da5a38cb22b3dfb0e6fefe7a7451cb SHA-1: eeb25ab58dc81222fd93693c4ea6c43f6ad44e83 SHA-256: 08a1433542780f1b0436c3cbbc3ff7eb2f81eeca214c8f23dc65a99e61eb0b7e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded links that redirect to a malicious domain, disguised as a Jeep owner's manual. The ML classifier strongly indicates maliciousness, and the presence of a redirector link points to an attempt to lead the user to a harmful site. No scripts were extracted, but the document structure and embedded URLs are highly suspicious.

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.club/wix?keyword=jeep+cherokee+trailhawk+2018+owners+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/6a22cb_c5fae94f72e941a6abe28c07ce0792f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_779a8f071e7742d2b48e30c0235c4d51.pdf
    • https://static.usrfiles.com/ugd/3eed2b_cf83bd647a0e46dcb6e4fa6893d9ef86.pdf
    • https://static.usrfiles.com/ugd/69695d_d19aa4634e0c46b5869edad105ffb5a2.pdf
    • https://static.usrfiles.com/ugd/510a18_21a54561554649b896f04634e68d2cae.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f3dcc434ccf4713bb7ef50dd056a26e.pdf
    • https://static.usrfiles.com/ugd/cf79db_ad75208f35014dbdae22e8fad43ecad5.pdf
    • https://static.usrfiles.com/ugd/b8c837_91e99408ba1e4e819a71593f890275e5.pdf
    • https://cdn.shopify.com/s/files/1/0436/8554/4089/files/71610065331.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/pte_read_aloud_practice_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/suplantacion_de_identidad_vehicular.pdf
    • https://cdn.shopify.com/s/files/1/0437/6172/9685/files/cheppave_chirugali_dialogues.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/artificer_5e.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/gufeposisodafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/95670361865.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/98641663952.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007193.bin
641eec0bf86f3769ca024ecd61ccb23eb3042d3f6e153adad77c2f7cdf3d6163
pdf-font-stream PDF embedded font (sfnt) at offset 0x7193 5840 bytes
font_01_sfnt_off0000855d.bin
e4394b9c785b3708cafe618cbfd23f22c11698f4b789200cee983f76e1703d61
pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 10388 bytes