Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f1a76a93a79570c…

MALICIOUS

PDF

65.4 KB Created: 2021-03-23 20:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f97ab6aa8b4b1d3de098c9731e7758ec SHA-1: f744a2828786b81d15e83cfaff9563f0bba17ea8 SHA-256: 8f1a76a93a79570cd9931fe94a4dbe848b116b8daeb7f97f9c0d0fd68a58c226
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains a large number of external links, with one pointing to a suspicious domain ('seumenha.ru'), suggesting a link farm or phishing attempt. While no scripts were directly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9676

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/award?keyword=clasificacion+de+los+asientos+contables+pdf
    • http://duvodoromoli.iblogger.org/where_is_my_dishwasher_filter_located.pdf
    • http://meletemobu.iblogger.org/transformers_cybertron_autobots_toys.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/209959ca-89f2-4480-aee8-703d78218c5b/flowers_for_algernon_charlie_and_miss_kinnian_kiss.pdf
    • https://d85b1738-a471-4043-b59e-116b2bb794a3.filesusr.com/ugd/97927e_71366a4c055b48f6ba0349721b3703c4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/260f3d07-14c7-41bc-a20d-7abbb3efb0dc/mcgraw_hill_connect_instructor_resources.pdf
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_41cad9fe779648d29ce6d725659fef8c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fd787364-2a70-4082-bc63-9acac4d8ee69/what_are_the_main_stages_of_deploying_lean_six_sigma_in_an_organization.pdf
    • https://s3.amazonaws.com/zafirawit/dead_soft_vs_half_hard_silver_sheet.pdf
    • https://s3.amazonaws.com/tesasubawalozan/kptv_tv_guide.pdf
    • https://uploads.strikinglycdn.com/files/2c8d021b-b29e-47cd-996c-f8469a3bf5c2/business_analyst_program_online.pdf
    • http://repawusep.epizy.com/68856914448.pdf
    • https://s3.amazonaws.com/mekonulegipero/tudamubetam.pdf
    • https://s3.amazonaws.com/xunilukegez/81814985987.pdf
    • https://s3.amazonaws.com/zedilegol/excellent_interview_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/749d76ed-8d93-45a6-8549-94de041fb31f/the_boy_who_harnessed_the_wind_online_book.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/nusidejedonovozepisavunoj.pdf
    • https://uploads.strikinglycdn.com/files/65bffdb1-ca7c-4618-904c-d40f0179ba8f/maytag_top_load_washer_not_spinning_fast.pdf
    • http://raxajuneneg.epizy.com/92466452595.pdf
    • https://0c241ebc-151b-48bf-a4db-a9f2ee65d67b.filesusr.com/ugd/c17081_223ecd3b4d8545c3be5b29c8d8385643.pdf?index=true
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_48b5ad44bf304025a722efdf780529df.pdf?index=true
    • https://s3.amazonaws.com/watajive/download_divergent_movie_free_online.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/49623297119.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb0.bin
6851abc1ba3afc0d1b65d255c826bc370e3249225fe0aaf6a2889c74ece30f5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB0 5096 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.