Malicious PDF — malware analysis report

Static analysis result for SHA-256 78df64ef6e2ed1f1…

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 12:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be73035e978932ccba05c153dd271406 SHA-1: f34c2833970f07a0f9d342b3d2d405083272dfac SHA-256: 78df64ef6e2ed1f1504859d27fc30bd922e8a503f454c891c36ea921080ff98a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text and URLs related to car warning lights, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector URL indicates an attempt to lead the user to a harmful destination.

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.ru/wb?keyword=vw%20golf%20dash%20warning%20lights%20explained%20pdf
    • http://zezalapef.fcwellnesscompanyltd.com/uploads/1/3/1/4/131438759/9305682.pdf
    • http://files.lsbookkeepers.com/uploads/1/3/0/7/130739593/muwofuwafe.pdf
    • http://files.maypalacevail.net/uploads/1/3/1/3/131398251/zaludok.pdf
    • http://files.farmershelpers.com/uploads/1/3/0/8/130873710/zuzusodukoni_wenupirevote_falajep_darogodopu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/kogaxelufegeloseluz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/11991459003.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/75986877394.pdf
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/83468707348.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/9611181828.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/action_verbs_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6110/files/veduj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdf
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/remelokudufoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/70908640117.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/4358877589.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_off0000632a.bin
ce09b228a6a59b326ca2ce4542c66365715793115143a0e8d520385a9d7909ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 5428 bytes
font_01_sfnt_off000075b9.bin
028c4deeae65f64f223fdc2165b172c1446ff76621e3a450618a241da84eecf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B9 10324 bytes

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