Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c151e1c226c3e87…

MALICIOUS

PDF

59.7 KB Created: 2020-08-12 01:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b01617920f0853c18b714aea32bee8c SHA-1: 3d30401785aab3496f09feca0bdeb47de2fd1737 SHA-256: 0c151e1c226c3e874bb61572638c4bcb8e06e2377d3af42c920611c908cc23af
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links. One of these links, 'https://ttraff.cc/pify?keyword=applications+of+iot+in+healthcare+pdf', points to known malicious redirector infrastructure. The document appears to be a link farm, attempting to direct users to various external resources, likely for malicious purposes such as phishing or malware distribution.

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=applications+of+iot+in+healthcare+pdf
    • http://files.hoppinglivestock.com/uploads/1/3/1/8/131871704/377800fb6.pdf
    • http://files.unanapsychologist.com/uploads/1/3/2/6/132682471/nalosob-mozow-risimiwexaf-xugaxapokebebi.pdf
    • http://loposa.lynnespaintings.com/uploads/1/3/1/8/131856917/nazuzukaradi_zidobo.pdf
    • http://zanew.gather1.org/uploads/1/3/1/4/131437402/dotesu.pdf
    • http://files.southernplainsphotography.com/uploads/1/3/0/8/130874671/lofabojesemopuro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0444/3661/9431/files/b._sc_1st_year_math_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18187133080.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/rowe_ami_jukebox.pdf
    • https://cdn.shopify.com/s/files/1/0435/8520/8483/files/discrete_mathematics_and_applications_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4646/files/antigone_paul_woodruff.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/52435372941.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/minarinojitobux.pdf
    • https://cdn.shopify.com/s/files/1/0438/1114/3842/files/agonistas_adrenrgicos.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/chuyn_t_sang_file_nh.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4472/files/situxo.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7f.bin
9b7858e544e8c668adde29f5b2025392f6b13719769ce20e8b9717355f363ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7F 5020 bytes
font_01_sfnt_off00007d6d.bin
50ad481b5ad0a074ce0a9cf4ae87bf3d6c470673bca1a7ecf2dce0ab0333d8f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6D 6964 bytes
font_02_sfnt_off0000913f.bin
7167f834716c3823f332e69f47cd89e98570b687bed631ed68b85284d014cfd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x913F 12164 bytes
font_03_sfnt_off0000b902.bin
e6236245b1b519c90993a0a0decb83651aa70bd3eb3f1615240c4a875e4479e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB902 17492 bytes
font_04_sfnt_off0000d255.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD255 4324 bytes

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