Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5f69c5167a0994…

MALICIOUS

PDF

43.0 KB Created: 2020-09-01 00:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa6cce0daba4be5116f55eae43898ec3 SHA-1: 6293a4f7090e34dd2ed71aa73ab0ff1278e64c81 SHA-256: 1b5f69c5167a0994124b8839fb12b3f3a145940f984cf4ab949371f8bc933225
152 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text suggesting it is a manual for a BMW X3, likely a lure to encourage clicks on the malicious links. The primary malicious URL identified is https://ttraff.cc/wix?keyword=2013+bmw+x3+xdrive28i+manual, which is flagged as a known malicious redirector.

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=2013+bmw+x3+xdrive28i+manual
    • https://static.usrfiles.com/ugd/0a593f_97a36440063348cb881f7708499d6f72.pdf
    • https://static.usrfiles.com/ugd/405339_86268e34eb69451f84bf90beb4264bcc.pdf
    • https://static.usrfiles.com/ugd/d3758e_978fe3f5a2884ebc91507ce20816f008.pdf
    • https://static.usrfiles.com/ugd/4b7290_03eca1b5a49f48cfac67f79e7d15308c.pdf
    • https://static.usrfiles.com/ugd/a91264_6246da83c2034b238b367d67150e572b.pdf
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/86486139449.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/bemakibom.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/39081743097.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/44565701096.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1519/files/bmw_tuning_software.pdf
    • https://static.usrfiles.com/ugd/9d869b_ff810995880942c28a1274d435b129dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_f29b2a0d105f4ecba9aed31dac4f6fbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff238bc9a5d74139b1572a6204f549ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_523629c35a334406a3d82ca05f1dd071.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/bollywood_actors_name_list_with_photo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/carbohydrates_biology.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/acknowledgement_of_paternity_form_pa.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_off0000672c.bin
7e96187b34b29e5dce87e38c60db39336f57728442716c7febdfd9579cddeac0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 5740 bytes
font_01_sfnt_off00007ab6.bin
7e3f921a5f69cfda2bae9d5058981cc5790fc88cf460f4da92a4f0f3035f12c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB6 10760 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.