Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9e12f770d4a5ca…

MALICIOUS

PDF

90.8 KB Created: 2021-03-17 04:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 92d71c4f671e6dfbf467e8635b6d2cc3 SHA-1: 0268afc2972b73815c1b29e97be09c628c1f6f3d SHA-256: 1c9e12f770d4a5ca8603cc9de6c115718e06342d476be2030f843e46af7bbe00
126 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. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to contain search-related terms, reinforcing the lure of a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://seumenha.ru/strik?utm_term=stihl+ms+250+or+251 PDF link annotation
    • http://usesoda.pro/rezamawozivosi834oy.pdfIn PDF document text
    • http://samoe-samaya.ru/diruwerufapafapcvwl3.pdfIn PDF document text
    • https://cdn.sqhk.co/tidilotofuka/ifphbMQ/84228065372.pdfIn PDF document text
    • http://dvertsoff.ru/964554954910wl8e.pdfIn PDF document text
    • https://duzozerijadid.weebly.com/uploads/1/3/4/4/134493401/31705693f8f.pdfIn PDF document text
    • http://goproits.com/java_for_32_bit_windows_xphunrv.pdfIn PDF document text
    • http://olymp-trade.top/50_top_questions_and_answers_interviewlddjb.pdfIn PDF document text
    • http://datab.vip/kenmore_elite_dishwasher_clean_light_flashing_8_timesi47ay.pdfIn PDF document text
    • https://liwarelavoz.weebly.com/uploads/1/3/5/3/135398493/6981a636c.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/YjgP8ij/mp3_player_windows_10_64_bit.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/5203696.pdfIn PDF document text
    • http://winoorama.site/how_to_add_sd_card_to_roku_3wgs5p.pdfIn PDF document text
    • http://rijupoxog.22web.org/speaking_in_tongues_bible_study.pdfIn PDF document text
    • http://gixuzozubo.22web.org/jukapudowumex.pdfIn PDF document text
    • http://sks-expertiza.ru/red_flags_card_game_reviewns9xv.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/ar4LIHQ/rufases.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/mibA6hd/chori_tere_filter_sort_kara_denge.pdfIn PDF document text
    • http://depotupunejiwo.iblogger.org/42529028803.pdfIn PDF document text
    • https://cdn.sqhk.co/xumifutave/ijdjjgc/amarok_drift_driving_simulator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_05411307a70b487782697a72496a0232.pdf?index=trueIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_9a2580c91d06451da4a90c431dbd3b8c.pdf?index=trueIn PDF document text
    • http://rawarawoxegig.epizy.com/jipebezolugodudegivug.pdfIn PDF document text
    • http://nibewisule.epizy.com/82014168854.pdfIn PDF document text
    • https://09af0a6c-c0e6-47ff-90c1-5b173435ccd1.filesusr.com/ugd/b92b66_29fdf747b73a438198fe66168cd6dde7.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.

FilenameKindSourceSize
font_00_sfnt_off0001240f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1240F 5268 bytes
SHA-256: e23eab2e344af0e2cb7976e590f6441ff67966ac7f6a4bc2f0aa1088128994bb
font_01_sfnt_off000135d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D6 11716 bytes
SHA-256: 599575ff02d0156ff1b56aeb0680ac3d16e85511964dd39d234d4a83f2a4d731

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