Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80b3cfa12706578…

MALICIOUS

PDF

54.6 KB Created: 2020-09-01 01:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdf72de368f2c1281dc9af433ca0bb7d SHA-1: 7a85466688c214d26b19f14e6903631371079a0b SHA-256: f80b3cfa127065781b19ea4d1db3c1f2124de9f6980638ca4357af4ffda8994d
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm. One of the primary links, https://ttraff.cc/wix?keyword=the+hollywood+reporter+roundtable+actresses, points to known malicious redirector infrastructure. The document body is heavily obfuscated and appears to be a lure related to 'The Hollywood Reporter'. The presence of numerous links to external PDFs suggests an attempt to distribute or host malicious content.

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=the+hollywood+reporter+roundtable+actresses
    • https://static.usrfiles.com/ugd/a771bd_3333a883fc4b459c9184bf9f56aaa53a.pdf
    • https://static.usrfiles.com/ugd/b11f6d_0338f0996b0d49f1b8930680af3c2421.pdf
    • https://static.usrfiles.com/ugd/b88e3d_8f4f0ee234324d82956740d62ed22507.pdf
    • https://static.usrfiles.com/ugd/a18aa6_e89fa0b5172d496c8c7e9bb9e33e0596.pdf
    • https://static.usrfiles.com/ugd/08fe48_524d9ed9213642ee92dea459649347b0.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/wegakadadubekuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/damubabofewokevivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/63812596109.pdf
    • https://cdn.shopify.com/s/files/1/0429/5658/7174/files/frga_p_annat_fordon.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/bovafatamewumevan.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8612/files/kajowodoxosuni.pdf
    • https://static.usrfiles.com/ugd/6f7357_d6295a94865040b6a5d7e1903289b881.pdf
    • https://static.usrfiles.com/ugd/b8c837_322e4f4a2bfd41cbb1aa844cf6c76590.pdf
    • https://static.usrfiles.com/ugd/008e52_a12f6403ffcd447fbd3baf431fc34c7a.pdf
    • https://static.usrfiles.com/ugd/c3f88d_4a27c1acd9504d279ec8f34aa867d010.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_off000096be.bin
e6ac1f6f70860222d7641e1ef3fce9a589249eab5ceb1fd59cf4fab6b0690efe
pdf-font-stream PDF embedded font (sfnt) at offset 0x96BE 5444 bytes
font_01_sfnt_off0000a948.bin
fd1f418e1308d50fd4d653395a19f95808bc5f3d6002b991c415a4cfb8997091
pdf-font-stream PDF embedded font (sfnt) at offset 0xA948 10596 bytes