PDF malware analysis — malicious · 3bcdd14491827803

MALICIOUS

PDF

79.0 KB Created: 2021-03-29 18:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 6c050aefe9298286a7e8a0aefa6b1ab5 SHA-1: 8f7f66207ebf5571372a163756766461962a59a8 SHA-256: 3bcdd1449182780354d89fa148d39cfd69ef25687c6ceebdcaf011df3bff0aa7

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9967

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://jottigo.ru/strik?utm_term=how+to+get+a+new+ebt+card+pa PDF link annotation
- https://cdn.sqhk.co/lerapuraroke/fii4xgg/pegasusa.pdfIn PDF document text
- https://xumijarivibamow.weebly.com/uploads/1/3/5/3/135339210/dc76150c.pdfIn PDF document text
- https://cdn.sqhk.co/lojibuwe/IhgmBaL/misaxidinomewelaju.pdfIn PDF document text
- http://prizinsta365.online/certificat_de_vente_vehicule_remplissablenp4o3.pdfIn PDF document text
- http://fc-aromat.ru/bejobedutofur31wm.pdfIn PDF document text
- https://rotalexabif.weebly.com/uploads/1/3/1/3/131381819/5977560.pdfIn PDF document text
- https://cdn.sqhk.co/golemejexeno/hjahhGv/rovulora.pdfIn PDF document text
- https://toxejezewigi.weebly.com/uploads/1/3/4/5/134513259/ea290.pdfIn PDF document text
- https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/1d9d9786.pdfIn PDF document text
- http://tosety.xyz/best_rear_seat_entertainment_system_indiao5mlp.pdfIn PDF document text
- https://cdn.sqhk.co/dilizilozok/if7VjeD/62057433264.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_c5d2737c104a4b07856e904a7cdfdac3.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kavalukato/ganapati_stotram_telugu_mp3_free_download.pdfIn PDF document text
- https://ce3a146a-d504-4efb-981c-4593fb85d965.filesusr.com/ugd/5b5da7_8f72c290a49e4cfdb19761f4218fa8fd.pdf?index=trueIn PDF document text
- https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_c7db1832e21a4b698e6af4dbbc9343fd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zevutebulaworel/befogoxavixakomat.pdfIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/tratamiento_asma_bronquial.pdfIn PDF document text
- https://s3.amazonaws.com/lepefi/beginner_acoustic_guitar_book.pdfIn PDF document text
- https://s3.amazonaws.com/jaxesabi/does_asus_rt-ac68u_have_a_modem.pdfIn PDF document text
- https://s3.amazonaws.com/rimepusox/31405964662.pdfIn PDF document text
- https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_6a95e9a7d29245ea87b031b529851119.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jivamubug/76854939165.pdfIn PDF document text
- https://s3.amazonaws.com/fuvidokibet/20277940213.pdfIn PDF document text
- https://s3.amazonaws.com/woxorojero/47947684698.pdfIn PDF document text
- https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_e55d266711254b68b484eb13aa9c9cfd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/diwitapezu/kitchenaid_pro_600_bowl.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f783.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF783	5224 bytes
SHA-256: `d35a57310427dd356f2b98073c7eeffc9a2e3180ec650225bc7cd0985645c3c2`
`font_01_sfnt_off00010967.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10967	10900 bytes
SHA-256: `01d6c7d03a4e908a5b99e4b39f81fa619e1bb36f901717e682bfb0f362644957`

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