Malicious PDF — malware analysis report

Static analysis result for SHA-256 f322e63f9956ca48…

MALICIOUS

PDF

88.0 KB Created: 2021-03-02 17:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 14db8c9916007103dc28c41e4e46949c SHA-1: 4da53c2eb9feb8da4b73a891de9b8935450dda9f SHA-256: f322e63f9956ca4878e50de360ec50caadb93175550d1367f851d650509a45d6
186 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, identified as a link farm, directing users to external sites such as fokemale.ru. Heuristics indicate this is a non-clustered link farm on disposable hosting, suggesting a malicious intent to redirect users. The ML classifier and ClamAV detection strongly support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/wix?keyword=super+drift+2+poki PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464862/normal_5fd7c3f5e5651.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/gfe7mwz/lizeled.pdfIn PDF document text
    • https://sapobukemofox.weebly.com/uploads/1/3/5/9/135974899/228682b840246ef.pdfIn PDF document text
    • https://pilewamef.weebly.com/uploads/1/3/4/8/134849526/wevetugifi_kilageg.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/fdkfMhf/nhl_scores_and_standings_wild_card.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383452/normal_5ffa41129be13.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/wRgd2rs/lodekesukonasumedin.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/vxheChh/wajurilisugetesavijoxevu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_6020a5dec1c26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492529/normal_600505428fe76.pdfIn PDF document text
    • https://pawizujepus.weebly.com/uploads/1/3/1/6/131637171/sugajov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_5fd79ebe5cdf3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476936/normal_5ff930c2ed550.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385648/normal_6005b9d42b0a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dupula/asuran_full_movie_free_tamil.pdfIn PDF document text
    • http://davojuke.epizy.com/beretta_92x_performance_pistol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC2 4916 bytes
SHA-256: b36d4549ade3f9582113fa19a79bfa35b97a059944a98bbdfc892cb2c517c126
font_01_sfnt_off00010b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8F 3388 bytes
SHA-256: 634e6ab0cbfc48e1e7073b23e34335346aff4942de6020f7710cff805b3efbe0
font_02_sfnt_off00011968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11968 10624 bytes
SHA-256: b4e41b0ff62f3f1ad71d95089159e8ee84b541c1076742110ecfe99016a85bc1
font_03_sfnt_off00013e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E05 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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