Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1260e14c79ec24…

MALICIOUS

PDF

41.2 KB Created: 2020-11-07 00:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e570bf18204f551cf67c12d13c0eadc1 SHA-1: 936b5a42e8daaee01fa56622b651dd530f302ff4 SHA-256: 2c1260e14c79ec240f5c372231f17722ae9fec4ccf1397e8f933fca3104c87a0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to suspicious or unknown domains, indicating a link farm or redirection scheme. The primary link, 'https://gettraff.ru/123?keyword=aclu+pocket+constitution+of+the+united+states', is flagged as a malicious redirector. The document's content is minimal and appears to be a lure to drive traffic to these malicious sites.

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://gettraff.ru/123?keyword=aclu+pocket+constitution+of+the+united+states
    • https://witorovi.weebly.com/uploads/1/3/4/6/134643219/devog.pdf
    • https://ponixojezunuto.weebly.com/uploads/1/3/0/9/130969897/duzubikibulizekata.pdf
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/cc7cb1b7038864.pdf
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/309b3.pdf
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/vinaruzipetaso.pdf
    • https://nugaridepi.weebly.com/uploads/1/3/4/4/134474671/2016245.pdf
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/759977.pdf
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/votalupop-zinimolowa-fililevipuf.pdf
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/tizexifotenutiv.pdf
    • https://dikoriwapajok.weebly.com/uploads/1/3/4/4/134447187/jijejopop.pdf
    • https://jexewibovagajuk.weebly.com/uploads/1/3/4/4/134485971/51b221f59780.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/53859fce-6ac9-4268-82ce-388dde928ff6/97151606264.pdf
    • https://rukuduxep.files.wordpress.com/2020/11/java_all-in-one_for_dummies_5th_edition_free_download.pdf
    • https://xewuripew660320655.files.wordpress.com/2020/11/fovagasadalimedav.pdf
    • https://uploads.strikinglycdn.com/files/44beaf43-028e-49bc-a69b-7f1954c03d44/54046090958.pdf
    • https://jamojowu.files.wordpress.com/2020/11/34626985596.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006415.bin
0c975b511ef6e2d681edfa290290130116d542f1aa30248e162ebc9cbf1674e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5200 bytes
font_01_sfnt_off000075ca.bin
b3e0032b314e181d75c08de3d7d2e1ec399edfc43ac18be2c48b5af0305a10ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CA 10148 bytes

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