Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ba90e993c941e0…

MALICIOUS

PDF

109.5 KB Created: 2021-03-17 01:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2f916dc8af2cdb80477b6909c6c4b548 SHA-1: 0e0f5fd94f865415ac9853f42a46c5d36f32b004 SHA-256: 62ba90e993c941e007189dde26dde411f782c7664851191e2b8afdc7d33a583f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The embedded URLs are used to redirect users to external sites, which is a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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://jacksth.ru/wix?keyword=vaporesso+tarot+pro+user+manual PDF link annotation
    • https://cdn.sqhk.co/sidogorego/Oggjiha/18363911455.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/ljdc8jd/61970633288.pdfIn PDF document text
    • http://manthoughtswebsite.website/pazedajuhjdx8.pdfIn PDF document text
    • http://mmamba.ru/zunikizcip7.pdfIn PDF document text
    • https://fapusazi.weebly.com/uploads/1/3/4/8/134849501/3454823.pdfIn PDF document text
    • http://help-igcopyright.xyz/56246992951ju6qd.pdfIn PDF document text
    • http://uchebnoe.website/dufixabivoxiligawotecnqqg.pdfIn PDF document text
    • https://sedogosep.weebly.com/uploads/1/3/4/4/134486754/f7e5e08c45cf73.pdfIn PDF document text
    • http://limaxinsto.xyz/argon_cations_anionssiq7h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_43b99cd3e0b44c59a5c7da25808ece2a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/introduction_to_computer_programming_book.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/kindle_3_hard_reset_paperclip.pdfIn PDF document text
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_e039a66010fa4099ae8918ee4087ef06.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kuxegu/aime_cesaire_discourse_on_colonialism_quotes.pdfIn PDF document text
    • https://1ee34b3e-bfcb-4e25-b227-79ffd44eef10.filesusr.com/ugd/9d5096_74d9bbe141a643078c9f565f120a7acf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/lavurumelovivufe.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/bebazebupidovefedobuk.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/78919428892.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/100_cotton_sheets_king_size.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/the_accidental_tourist_oxford_bookworms.pdfIn PDF document text
    • https://aaf2f8d8-4593-4070-95c3-ed2308805076.filesusr.com/ugd/337eea_f00e3ee7def84369b4cc74a23473db4f.pdf?index=trueIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_8d81436a709a4b33924e9165665bd784.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 28456 bytes
SHA-256: a216ba688d03bee23527e157580c35d9d3e3dd5a1ab2ad89789ebee24f7b19df
font_01_sfnt_off000157b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157B3 4932 bytes
SHA-256: 4c45671d74514ac44a9a912c7d1c8d15410fa941e3adfdcb3889c63bd69c63c9
font_02_sfnt_off00016865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16865 12560 bytes
SHA-256: b5bb86c764b9a9ba71cbd56700a726309c34832a895d427fcc58d525251b6bbb
font_03_sfnt_off000191b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191B9 16492 bytes
SHA-256: 7b703e49d2bfb7c24bd9ec53fc02997604e7113e19465383e36cd808f86f7626

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