Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d8c852663ad55b…

MALICIOUS

PDF

79.3 KB Created: 2021-03-22 21:05:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9a38751635b78544acb0105cc8c655cb SHA-1: 057086c355c940d375a0818999f0f0a7ac8e7bc1 SHA-256: 69d8c852663ad55b62ca80ba6cc9355350fac746f42b2b3957cc797a789ae071
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm. The primary malicious URL is https://golowaki.ru/aws?utm_term=is+perth+expensive+to+live, which is part of a suspected SEO manipulation or phishing campaign. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/aws?utm_term=is+perth+expensive+to+live PDF link annotation
    • https://kokujefep.weebly.com/uploads/1/3/1/4/131409677/9525857.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/gikKifi/40472375353.pdfIn PDF document text
    • https://gunagejosiva.weebly.com/uploads/1/3/0/7/130738835/vuzadelunavexewisup.pdfIn PDF document text
    • https://goginaderexikez.weebly.com/uploads/1/3/5/3/135306094/4635099.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/ap_reorganisation_act_2020_in_telugu_download.pdfIn PDF document text
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/4085872.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/ggeicig/27232611467.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/CHTcJhh/drawer_pull_synonym.pdfIn PDF document text
    • https://cdn.sqhk.co/jasuxerazifo/jcrjidl/rogasajupujib.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
    • http://gowepuxajotezo.onlinewebshop.net/how_long_can_fleas_live_without_air.pdfIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_f0ff8e4a462a45dbb06f8c67f79a7002.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/gilenawisububivafede.pdfIn PDF document text
    • http://nemenarubaz.atwebpages.com/73780167027.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/mm_a_pulgadas_pvc.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/environmental_health_specialist_interview_questions_and_answers.pdfIn PDF document text
    • https://30de3caf-c510-4ce9-8691-b8280dc60d9b.filesusr.com/ugd/4980ee_d0e23c4ea29a42a1a64a2721fc7d5cf1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/91336552209.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/can_a_warlock_change_patrons.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/bootstrap_django_form.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_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 4548 bytes
SHA-256: 4276d9859b8d4f04009d8d095ada9eea7f4b9c83164d06ac51ca53b95eb79af9
font_01_sfnt_off0000fa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 11180 bytes
SHA-256: 892eb14ba11e4a963348b97047d9d80886bd259b8e6e2cbb910c90555e1b036c
font_02_sfnt_off0001206c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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