Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9cc358be2790f1…

MALICIOUS

PDF

86.4 KB Created: 2021-04-24 14:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fac301c93c922be24ee53bfc26346086 SHA-1: e85ecb84df2a3a5670fdc8256f97d932db7900f1 SHA-256: 9f9cc358be2790f152c2ffbca43b0bbcaafff977dee620ddf73ae9059b8b6e68
176 Risk Score

Malware Insights

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

The PDF contains a link farm and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or scam attempt. The document body, though heavily obfuscated, suggests a lure related to 'Ryobi intelliport charger instructions', likely to trick users into clicking the embedded malicious URL. No scripts were extracted, but the PDF structure and external links point towards a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/strik?utm_term=ryobi+intelliport+charger+instructions PDF link annotation
    • https://woxazalaxit.weebly.com/uploads/1/3/4/2/134235403/1595138a.pdfIn PDF document text
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/536c7d.pdfIn PDF document text
    • https://nurafotupitu.weebly.com/uploads/1/3/4/4/134495453/mexadoxore-dojekuwupe-numebok-dudixa.pdfIn PDF document text
    • http://zabotefix.iblogger.org/momivofajozerafazexazozi.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/how_to_set_up_weber_rotisserie.pdfIn PDF document text
    • https://4f640d82-8365-4c22-93d6-dbd3427c3fb0.filesusr.com/ugd/55e8b7_ec3e5abd7ac7443187aa1f5682f1c0e6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/31621002529.pdfIn PDF document text
    • http://vesunisiwu.rf.gd/towasitusibonuzoxalozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a73b332-8d12-4c16-9ca5-3e9fff21e2d9/14704332989.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/fowikiwovusitejugodigumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9d04194-2e0b-4755-a6f5-134a59a4b5fe/how_to_reset_filter_reminder_on_honeywell_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/classical_conditioning_and_instrumental_conditioning_theory_are_examples_of.pdfIn PDF document text
    • http://pabekalu.rf.gd/vusolufizobu.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/82554092816.pdfIn PDF document text
    • https://83c30a2d-d83c-4020-88f4-fdb7bed8c9e2.filesusr.com/ugd/e59e18_fe883db496d044328df3f94dad114a8d.pdf?index=trueIn PDF document text
    • https://8319d365-0190-44ee-b2f3-e76f6fd230eb.filesusr.com/ugd/112488_4d43c4efc88e425aa97f29e6587764c3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8169743c-b70b-4bac-bc83-e3733589b584/gonorulim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bfb8395-fefd-4553-97ed-429bfba510f5/how_to_use_descaler_on_nespresso_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/marifuwunefokes.pdfIn PDF document text
    • https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_4d9505d65e0a4d4989bbb3cf4a5008b0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/potamotaz/present_continuous_tense_worksheet_for_class_7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FD 1724 bytes
SHA-256: d2d65a8b04c555ff691869507fe63aecb975aafdb4ac6af5e2f016a013b6e4a3
font_01_sfnt_off00010f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F89 5444 bytes
SHA-256: 6299fbe34deda359d7430742479bd4af131a0cb600235f561ac1d3a241707ef9
font_02_sfnt_off00012215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12215 12844 bytes
SHA-256: 7c74fab112febba0f4e740edfdc36e5329003047c302c98154e1b0c511b17faf