Malicious PDF — malware analysis report

Static analysis result for SHA-256 7681045968111834…

MALICIOUS

PDF

79.1 KB Created: 2020-12-03 17:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28894b1ea454611d13b84c5aea7a375a SHA-1: 1efa10aa7d62feaf2644aad6b6ce9822cd1c6be3 SHA-256: 76810459681118341e4f07fb1b9e58f9f9aa62df4e6928e53f7900eeab582759
156 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristic detections indicating it is a link farm designed to redirect users. The primary malicious URL identified is traffking.ru, which is likely used for phishing or scamming purposes. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/aws?utm_term=twitch+guide+r6
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/minugen_rabewasa_vabuse.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xuvamuba/chevrolet_malibu_2016_owners_manual.pdf
    • https://static1.squarespace.com/static/5fc501b17d0c8f249d5b4547/t/5fc5c576eaf37e3b64645295/1606796662845/53112509827.pdf
    • https://uploads.strikinglycdn.com/files/2456b2bd-520a-4b99-9951-2f7dbc34382f/zonokurewavuxux.pdf
    • https://uploads.strikinglycdn.com/files/43f7dd01-91cd-4520-8404-aaa931e3fbbb/amor_eterno_telenovela_turca_capitulo_26.pdf
    • https://static1.squarespace.com/static/5fc0dbcbbf71053ccb0ffb78/t/5fc319e73c6ccf69f3c46408/1606621673123/71832563655.pdf
    • https://static1.squarespace.com/static/5fc021705e8e827d4289a3fa/t/5fc134b01972c46e3cca0698/1606497456964/jumbo_universal_remote_manual_en_espaol.pdf
    • https://s3.amazonaws.com/wopari/assassin_s_creed_odyssey_exploration_or_guided.pdf
    • https://static1.squarespace.com/static/5fc0052111f6a4198480c96b/t/5fc121c9f3de5e49b58cca17/1606492621486/las_mejores_razas_de_caballos.pdf
    • https://static1.squarespace.com/static/5fc7acbda4492a057e24fc6f/t/5fc805b369c9156b0eda3f00/1606944179337/hello_kitty_cafe_truck_shop.pdf
    • https://uploads.strikinglycdn.com/files/76a0ef67-b7ee-4078-8149-2721a7ecccfc/dijigunetosazeripamibet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f2.bin
d71e2a3ffa99495fe9a399983db4d4dbecb3b0f17ceeead9f619760a376a1949		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F2 3108 bytes
font_01_sfnt_off0000de15.bin
1d0c25d93f35099fe31d6b6b2d374c87a3b07b1457e8f0e8b868d69ec67102f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE15 4976 bytes
font_02_sfnt_off0000ef11.bin
2bee96634a217aea2336b07164a81d86a971fa9b52d872b495ebdc44adf28722		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF11 10348 bytes
font_03_sfnt_off00011294.bin
60ac291b02b94b278c9d51aeafae122d0c93141934adb038c9f77cf71bec55ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11294 17528 bytes

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