Malicious PDF — malware analysis report

Static analysis result for SHA-256 0043474874d56a92…

MALICIOUS

PDF

85.3 KB Created: 2021-03-24 21:02:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44c2ed8c2bc330db96ab4c44335dfe1 SHA-1: abbde9855529fb5fb03c4d64e6aac52f3d7a429a SHA-256: 0043474874d56a9252e0867a3a36cc7ada2809855b00afcc6cd7d3e9c5940c7e
216 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The document contains a large number of external links, many pointing to other PDFs, suggesting a link farm designed to obscure the ultimate malicious destination. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://golowaki.ru/123?utm_term=cornell+disorientation+guide
    • https://cdn.sqhk.co/putomikoluku/hc5NiiC/rodejugifipitagib.pdf
    • https://cdn-cms.f-static.net/uploads/4379355/normal_602f14a8909bf.pdf
    • https://cdn-cms.f-static.net/uploads/4370987/normal_60120abc54383.pdf
    • https://cdn-cms.f-static.net/uploads/4473035/normal_604e6b30c3d23.pdf
    • https://cdn.sqhk.co/zagawodijimo/PhjYjcH/95046882739.pdf
    • https://cdn.sqhk.co/kuniremolu/ZAaigjh/unconformity_in_geology.pdf
    • https://cdn-cms.f-static.net/uploads/4453730/normal_5fda14e40c1c9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d04c2b29-3777-4fe6-aaa9-ab96f87c3324.filesusr.com/ugd/43eb95_e0e7e4b8bab84d169235356a58bcf36c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a7c68bf2-8ccd-4346-ab68-b1ef8b48bc16/cisco_linksys_e2500_setup.pdf
    • https://uploads.strikinglycdn.com/files/c82bbdc6-604e-4696-b55c-61367803dc99/price_of_bitcoin_in_2013.pdf
    • https://uploads.strikinglycdn.com/files/3e6beac5-c679-4a60-a0db-94df398d880e/jaxuwidaxufosurezovas.pdf
    • https://uploads.strikinglycdn.com/files/4aa60721-89f1-4ba5-8efb-01da7cf4da29/do_vibration_machines_help_osteoporosis.pdf
    • https://uploads.strikinglycdn.com/files/756c6a00-21b7-41ac-94ee-3fbad9fa6343/duwodememumuxubu.pdf
    • https://s3.amazonaws.com/wisuw/mutafo.pdf
    • https://s3.amazonaws.com/perurulexi/gun_shooting_games_for_android.pdf
    • https://s3.amazonaws.com/libosokune/60514862611.pdf
    • https://0c3b2bb2-3ac9-4e0e-a0b2-530a831cdf0d.filesusr.com/ugd/23193f_b1e0997510fa4d37af4c5b4625ba2769.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9de.bin
ada804c4e2557b19525e5ebe3602b7685e451e2647e7eecf1b64ed63e0d1a1ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DE 4896 bytes
font_01_sfnt_off00010a8c.bin
f30c5e0674293d41b4127f7f881726f9b830cc37b2c85614640dbdc06f402afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8C 11284 bytes
font_02_sfnt_off00013164.bin
c3f07645d375a961ac17480bc633724385bce0f4b73e55ea507a7fa551b74b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13164 16164 bytes

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