Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a7bd17f0f8ad1b2…

MALICIOUS

PDF

89.1 KB Created: 2021-04-05 08:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f501abf6d789c9eba38960311e2b0b06 SHA-1: ea14c4752a7703e9a9971fc94ab79e46294afcd9 SHA-256: 2a7bd17f0f8ad1b2de07335db4713cb25e017cf8b067c9cf542af3bbf67ef289
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan distribution attempt. The PDF contains a large number of external links, many pointing to benign-looking documents, but one prominent link to 'baarspo.ru' suggests a malicious redirection. The document body is heavily obfuscated, but the presence of PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://baarspo.ru/strik?utm_term=alan+watts+quotes+life+is+not+a+journey PDF link annotation
    • https://tifedagarowab.weebly.com/uploads/1/3/4/6/134641562/vejuzulo-mujimugarapokam-nixuru-zesivikatav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_6046f5d5bed14.pdfIn PDF document text
    • https://lupunudarowujak.weebly.com/uploads/1/3/4/5/134599946/3613424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490364/normal_601e116239f6b.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/S5x65mR/rotary_tool_kit_walmart.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447436/normal_6001f527103a3.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/heie9hq/fenulejojex.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/jcuhaxH/jesarosutuwi.pdfIn PDF document text
    • https://fasorijaj.weebly.com/uploads/1/3/4/5/134501708/5026055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_604fb9443eba6.pdfIn PDF document text
    • https://cdn.sqhk.co/puburasar/dRXicje/lloyd_spatial_data_analysis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/luvonozotilopituneked.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/leveling_guide_wow_classic_alliance_priest.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/91479566611.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/consolidated_billing_report.pdfIn PDF document text
    • http://wotixebapaxuwug.rf.gd/game_god_of_war_pc.pdfIn PDF document text
    • http://tuzibepunu.rf.gd/how_to_find_the_location_of_a_picture_on_instagram.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/teboweninemo.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/detavagixer.pdfIn PDF document text
    • http://bolixul.epizy.com/accounting_basic_terms_and_definitions.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/49084257832.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/1992621571.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_off00011077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11077 5028 bytes
SHA-256: 0b960af291c44a9518b4ff6391e63dd0ee2c6a87ad9adac38d9715ac25b6aac9
font_01_sfnt_off000121bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121BD 10960 bytes
SHA-256: 1ce2dd1d8c9947160e9891c2e04816f51c367f9a1e514b7e11181a23ddc54c43
font_02_sfnt_off000146e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146E9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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