Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4f3977607d7c1d…

MALICIOUS

PDF

45.4 KB Created: 2020-09-01 04:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e4b560dd1241aef0f315f9296ef9f8a SHA-1: 06a3952a45a7d70ab4b85e6010f59b15577ccaf4 SHA-256: 6b4f3977607d7c1d6fe32ec6304524cf59eeb52738215e07262358d9cce033b8
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is `https://ttraff.cc/pify?keyword=advantages+of+amorphous+metal+transformer`, which is flagged as malicious. This indicates an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=advantages+of+amorphous+metal+transformer
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_98fbcd487e8d4872953a609484692e11.pdf
    • https://static.usrfiles.com/ugd/5be868_111b3a2c353f4c62a32a4e691ea1753d.pdf
    • https://static.usrfiles.com/ugd/353d00_654768e92c36481da0f4eb1f9e516562.pdf
    • https://static.usrfiles.com/ugd/6f53d7_c211910e70d041f5a8f73285e30183d0.pdf
    • https://static.usrfiles.com/ugd/0bcf16_fc56a5b367e942998426804eff3ecb27.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/32414029059.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/65188188131.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/27573536133.pdf
    • https://cdn.shopify.com/s/files/1/0467/7491/1129/files/26266779578.pdf
    • https://cdn.shopify.com/s/files/1/0432/3760/5544/files/can_t_stop_singing_covenant_worship_chords.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7273b7c71ec4c0b95ebea59f1d08325.pdf
    • https://static.usrfiles.com/ugd/3e9e83_8d720f0a8e064e208c8c89b00e5e4fb8.pdf
    • https://static.usrfiles.com/ugd/10a4aa_91e26d2c8c294cd3a06d6c4af01c9958.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000641d.bin
23c83c8b3ad3ff90b3bf7063b35eb887d25c5b93875d039c2b9d493d8ad41bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 5336 bytes
font_01_sfnt_off00007621.bin
f265e38e290130e65d5ffb8f4d84c9117c98c8152d9f66aa242b8df437c0ea1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7621 10696 bytes
font_02_sfnt_off00009a96.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A96 4324 bytes

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