Malicious PDF — malware analysis report

Static analysis result for SHA-256 9528194eca1a057f…

MALICIOUS

PDF

75.2 KB Created: 2021-03-18 12:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bca6bb7b3f464c781a507163ed3e9fce SHA-1: c117abb11f8e6412d71ce328992a1d7d924a659b SHA-256: 9528194eca1a057fd4722ddf96b7f796c3a081da9e5369e6e72abb1779fbb616
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, appears to be a lure related to a 'Honeywell manual reset', likely intended to trick users into visiting malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=honeywell+rth221b1039+manual+reset PDF link annotation
    • https://roralolew.weebly.com/uploads/1/3/0/7/130775143/762cb.pdfIn PDF document text
    • https://lekevemu.weebly.com/uploads/1/3/0/7/130776436/bf435a253fa6c.pdfIn PDF document text
    • https://pezilesuwubev.weebly.com/uploads/1/3/4/6/134639222/04cfd53cdd6c9.pdfIn PDF document text
    • https://vejupurujiku.weebly.com/uploads/1/3/1/6/131606174/xegeb_juvigomiderer_sufetaposonoled.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/master_forge_smoker_instructions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382407/normal_5ff7871fec835.pdfIn PDF document text
    • http://medicinfo.online/mumisitaieb12.pdfIn PDF document text
    • http://vuvezalamosi.22web.org/fitibotedaponupubomej.pdfIn PDF document text
    • https://vufaredagisab.weebly.com/uploads/1/3/4/5/134585575/5930088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_6016e780dc122.pdfIn PDF document text
    • http://all-host.site/mi424wr-gen3i_bridge_mode4tk8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/what_color_are_evies_eyes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944f2da6-618f-414e-a349-9653cac639eb/mugelonupumotisix.pdfIn PDF document text
    • http://misibinebob.epizy.com/mizeme.pdfIn PDF document text
    • http://wumuduwowuwi.rf.gd/55978302093.pdfIn PDF document text
    • http://rodever.rf.gd/56677469088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e759e1-8dd9-4699-9e57-d5b4d497b637/how_to_do_a_fools_mate_in_chess.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7262e916-0774-427e-91c2-049b8b890e69/stronger_than_ever_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358212f1-6568-4d39-8b2e-9825ba442bbb/wawigejodivebuj.pdfIn PDF document text
    • http://jarawujutuva.epizy.com/30838114276.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE781 5868 bytes
SHA-256: 584f269cc0a022aad87dbb06a5bccce4c8742f1d8909c07c51bbac165a024c55
font_01_sfnt_off0000fb5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5B 10536 bytes
SHA-256: ee04b7f47d32715833ea1aedb81fea61d00d42c32a45d7d81087bed0a3ba143b

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