Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3fc03868814deb…

MALICIOUS

PDF

47.3 KB Created: 2020-09-07 20:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1326857be781b64eb48b17a19856e039 SHA-1: afe471a34f6f9865418b5af9077f0b65af08a7ac SHA-256: 9c3fc03868814deb978752eada6d4ac94c605ab57297aa09039c41971be9b9db
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to "ttraff.me", identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure for "background app for iPhone". This indicates the primary intent is to redirect the user to a malicious site, likely for phishing or to download further malware. The PDF also hosts a large number of other PDF links, many pointing to the same domain, suggesting a link farm or SEO poisoning tactic.

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.me/wix?keyword=background++app+for+iphone
    • https://static.usrfiles.com/ugd/b8c837_5a4bcb5b25d54fa685ba53a4e75da3a6.pdf
    • https://static.usrfiles.com/ugd/7598fa_cba3f5bd8b43431da668bccdb56fa16b.pdf
    • https://static.usrfiles.com/ugd/0779a3_ee1a9f8a836446d384b4c0f6196b7ec3.pdf
    • https://static.usrfiles.com/ugd/64f9d2_427911aa283b42dca6086a272f0234a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_31e17141cec84f3680680dc50bba2ba8.pdf
    • https://static.usrfiles.com/ugd/65d6f7_c06eeeba9147427daf747585e1b36820.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b4e67165c1340dc9c99ea615bc83a72.pdf
    • https://static.usrfiles.com/ugd/5bb01c_7e2b1fa0affb468b812366274b2d251e.pdf
    • https://static.usrfiles.com/ugd/79e0dc_b8e60e7aae2b4e4ab8efe2c9271acfad.pdf
    • https://static.usrfiles.com/ugd/03ae60_86999ddfc78640698b74cd3dff6314f1.pdf
    • https://static.usrfiles.com/ugd/99afdc_2226392a8b114094b72d6b298d5b62e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8702141a2b3b453281fcd20b986c8425.pdf
    • https://static.usrfiles.com/ugd/3dd68e_d552daa5caea4415979ac5899470f1fa.pdf
    • https://static.usrfiles.com/ugd/40b9e6_7f87f09fd050474d8a62b76bf385e1cf.pdf
    • https://static.usrfiles.com/ugd/8e1900_68b173e986f848638ad5dcd67bd0c844.pdf
    • https://static.usrfiles.com/ugd/4117a9_4c324d78d43741b78adeb66aac980cd4.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_off00007aae.bin
13d3160fd4dd41053127467a7d526c7cff6d05c78d35ace40b980fec411ee93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 5320 bytes
font_01_sfnt_off00008cc8.bin
06b6f7886d8bfaf348f0843bd0f3eb2b7c2a8eb53b8346ff315790c0aab9d1e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC8 10360 bytes

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