PDF malware analysis — malicious · e54866bedef32f68

MALICIOUS

PDF

86.0 KB Created: 2021-03-02 23:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 57a8e3e252cacc099eed09ed385dfe26 SHA-1: 62d4876b417d1ce5d6454a17539e684e620b8e18 SHA-256: e54866bedef32f6880747e2ec29818ff3820fbe407932d1926c4bfb81d0930d5

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1598.003 URL/Domain Reputation Access T1059.007 JavaScript

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam pattern, where the document prompts the user to call a phone number. The presence of numerous external URLs, many hosted on disposable domains, further supports a phishing or malicious redirection scheme. No scripts were extracted, but the overall structure and heuristic firings point to a phishing attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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 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.
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://soxebez.ru/strik?utm_term=how+to+cancel+call+forward+on+nec+phone PDF link annotation
- https://static.s123-cdn-static.com/uploads/4479435/normal_5fe4adc33dddc.pdfIn PDF document text
- http://islandlandscapesbb.com/xutavibesudoripokiwakbsc8q.pdfIn PDF document text
- http://stepka2016.xyz/58302762552iktyi.pdfIn PDF document text
- http://teleporttur.ru/51763778401fw07l.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418583/normal_601dd474e9419.pdfIn PDF document text
- http://milanomodaitaly.site/kegudubesabevad2r9jk.pdfIn PDF document text
- http://ganitigusawev.mygamesonline.org/77898140289.pdfIn PDF document text
- http://robertferrell.net/american_red_cross_cprtlgzt.pdfIn PDF document text
- http://eeeeeyyy.space/epklf.pdfIn PDF document text
- http://karnaval.host/bumefopomunhwfzt.pdfIn PDF document text
- http://skameyki.club/falling_in_love_netflix_wiki5eycb.pdfIn PDF document text
- http://mitutepoka.medianewsonline.com/gas_laws_equation_sheet_answers.pdfIn PDF document text
- http://freud.icu/best_dd_online_game67t4n.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457560/normal_602e6f34bf84e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494440/normal_5fcd0052cfbc2.pdfIn PDF document text
- http://kiwenalod.medianewsonline.com/can_python_be_used_for_data_analysis.pdfIn PDF document text
- http://maska-respirator.com/oceanhorn_2_switch_date_de_sortie39nby.pdfIn PDF document text
- http://fallofelin.online/lated13co9.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/dowavelaxam/awadhesh_premi_ke_video_gana.pdfIn PDF document text
- https://s3.amazonaws.com/ropidadegaxut/file_from_sftp_server_using_vb._net.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f993.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF993	5116 bytes
SHA-256: `dbe38a5951f2065b4b0d97428ab992118ba799db201f563cf334b0282cc8db99`
`font_01_sfnt_off00010b08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B08	10580 bytes
SHA-256: `28658ac0b1c74475ead0fb3c0c53498989d55eeefc575124fe145912ac28c9b6`
`font_02_sfnt_off00012f8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F8A	17732 bytes
SHA-256: `2b6219bc689a4863b870a6cdadde3b09fa088b1d26e8adf823eb99713b9b644c`

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