PDF malware analysis — malicious · ba456238fcaa7e93

MALICIOUS

PDF

78.3 KB Created: 2021-04-18 09:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 9a88bde680d14c888e5118851b3f2275 SHA-1: 2394db740f4e80306125327babdd700bd31d9d36 SHA-256: ba456238fcaa7e9375f0105789ad2ad55f69a9d0005bcea618a6fa1b556bfeaf

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, with one prominent URL pointing to a site offering 'ps4 gta 5 cheats phone numbers', suggesting a lure for users seeking game-related information. The presence of a PDF link farm and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious intent, likely to redirect users to a malicious site or download further payloads. The ML classifier also flagged this PDF with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=ps4+gta+5+cheats+phone+numbers PDF link annotation
- https://vowipolijej.weebly.com/uploads/1/3/4/7/134713390/8940565.pdfIn PDF document text
- https://bososotozakep.weebly.com/uploads/1/3/1/4/131437593/4746311f7a44b.pdfIn PDF document text
- https://zofijakifixanow.weebly.com/uploads/1/3/4/6/134677560/pumavekowukalufo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/mexijegedakol/2d_and_3d_shapes_chart.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/vidutu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb01fd54-5532-4f04-baa6-3f28b3d3832f/jaxulumiburajewitudejop.pdfIn PDF document text
- https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_19eb0ba0d7c845f3876272e76e06dc7d.pdf?index=trueIn PDF document text
- https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_eaea8d69f3e241a6916eae75ae1ea711.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/legapatatezisa/8725565165.pdfIn PDF document text
- https://s3.amazonaws.com/mamibis/zegojolunesosebosazitu.pdfIn PDF document text
- https://s3.amazonaws.com/kaxukok/mini_mental_state_examination_definition.pdfIn PDF document text
- https://s3.amazonaws.com/fedure/cash_dividends_paid_on_balance_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/resisuna/where_to_buy_digital_photo_frame_in_singapore.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/084099c6-b346-49f0-98b2-4a2a4482653d/vabezibubuwun.pdfIn PDF document text
- https://s3.amazonaws.com/gomakobez/copy_paste_rare_symbols.pdfIn PDF document text
- https://s3.amazonaws.com/devuxuzejozam/how_to_make_garlic_butter_sauce_for_lobster.pdfIn PDF document text
- https://s3.amazonaws.com/tanapilamaxi/40735074170.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b3c2c633-caa7-4ff5-b0e7-77b5f5514eba/fepolusitesuweguxo.pdfIn PDF document text
- https://s3.amazonaws.com/jeromopelurab/best_bitcoin_wallet_for_android_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8339574-563c-41fa-89d2-f79db4d20924/how_to_connect_blueant_bluetooth.pdfIn PDF document text
- https://s3.amazonaws.com/datarofapakil/android_10_samsung_a30.pdfIn PDF document text
- https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_0d063d962ba249758fb7cf6cb9069555.pdf?index=trueIn 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_off0000f166.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF166	5668 bytes
SHA-256: `5f5283eed8390888052d023970643d46278c186877b78986d4481ac2b952389c`
`font_01_sfnt_off00010490.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10490	11536 bytes
SHA-256: `b168151a00282ec85e82d59ffa9bc40ef8f9ea1736d8989a9c9d7bd290da7b77`

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