Malicious PDF — malware analysis report

Static analysis result for SHA-256 002f9a50ed36c5f8…

MALICIOUS

PDF

77.8 KB Created: 2021-03-17 15:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a1ab6c95fc3430b9b086c3f13691b6b SHA-1: dd621864a7f31c0c77979973b20eb9c9c6df2cf7 SHA-256: 002f9a50ed36c5f8c0b3f4bf70efe5458865e106ed694a6591c889b7d2c0a174
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm and is detected by ClamAV as a phishing trojan. The embedded URL points to a domain that appears to be used for distributing malicious content, disguised as a thermostat manual. While no scripts were explicitly extracted, the nature of the PDF and the detected threat suggest it's designed to redirect users to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/wix?keyword=honeywell+t6+pro+programmable+thermostat+manual
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/xonewavesum.pdf
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/nitupuwaxesoragaki.pdf
    • https://xipumizi.weebly.com/uploads/1/3/4/7/134746986/zitunoberemaxis.pdf
    • https://lozorodarefela.weebly.com/uploads/1/3/2/6/132681783/zomiwok.pdf
    • https://zadopelujon.weebly.com/uploads/1/3/4/8/134884154/furaker-dixumivojasezab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a84472ad-fa6d-4fbb-be56-3575348b3e2b/que_es_la_fotografia_aerea.pdf
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_35a5326a978b49679b3fe72cfcf89f7a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/659278a3-09df-435c-8e76-e5100fe5b465/12202614828.pdf
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_b5b344ec8d5e4cf68dd973ebc07ed556.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7b1e3294-fa5c-4b83-8c2d-7cbddd336c8e/does_ipega_work_with_iphone.pdf
    • https://s3.amazonaws.com/zumomasugipeno/gulp_down_food_worlds_biggest_crossword_answers.pdf
    • https://uploads.strikinglycdn.com/files/74f1109d-67e0-4b52-aa06-bcf29bf927c1/24909412656.pdf
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_815a06af493c4726882aa46b9eb8218a.pdf?index=true
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_2ad3c7f869634f30afd0506931e42709.pdf?index=true
    • http://gexujik.epizy.com/aicpa_professional_standards.pdf
    • https://s3.amazonaws.com/zobuwubedak/21371753677.pdf
    • https://uploads.strikinglycdn.com/files/c4ec2d62-ca46-40ad-9ad7-0858edbc0909/99464645222.pdf
    • http://runumebutevota.rf.gd/helene_cixous_the_laugh_of_the_medusa_amazon.pdf
    • http://xaninulutinofeg.rf.gd/75885250415.pdf
    • https://s3.amazonaws.com/safago/alfred_rosenberg_livros.pdf
    • https://s3.amazonaws.com/piwupevivotixi/29845181791.pdf
    • https://s3.amazonaws.com/xajowu/vpn_free_ios_apk.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_off0000f0cb.bin
ec5de6206df17783ab307013a6f587a7e2d23290799ad73bbe3122233d4f4da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CB 5684 bytes
font_01_sfnt_off00010401.bin
c0e431f4a193203aaf647ce00de58d682c40fc79736143a216700969e41f0521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10401 10988 bytes

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