Malicious PDF — malware analysis report

Static analysis result for SHA-256 facbd2371b25743b…

MALICIOUS

PDF

82.6 KB Created: 2021-03-15 21:36:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 383ca108f073537051572bb27c845f1d SHA-1: dded0455edd64cfdaba1d61f880ae702fbe87b9e SHA-256: facbd2371b25743bf068a3d00a4fb838244c8704c2d2ef5d47c7691ae018220e
136 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/strik?utm_term=proyecto+caballo+de+troya+fue+real PDF link annotation
    • http://online-bestshop.xyz/39757318231dhlzq.pdfIn PDF document text
    • http://presentinsta.site/87580858861fiau3.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/83083988169yxg9s.pdfIn PDF document text
    • http://bilkan.fun/tadopoqyrh3.pdfIn PDF document text
    • http://oneitshop.pro/20500107059ycwae.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/botunujobugubupawols4mbb.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/kazojupopepopupovawof7tovx.pdfIn PDF document text
    • http://ita-fitness.fun/vertex_form_of_polynomial_definition8roor.pdfIn PDF document text
    • https://cdn.sqhk.co/palezubifo/hdgd0gf/disc_golf_rival_skip_shot.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/iagfihM/launch_trampoline_park_columbia_columbia_md.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/650076821485xub7.pdfIn PDF document text
    • http://lumacy.site/rotating_skyscraper_in_dubaiz33av.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/maze_runner_2_full_movie_online_freevwkel.pdfIn PDF document text
    • http://marketes.pro/98_polaris_trail_boss_250_specsb0oyp.pdfIn PDF document text
    • http://ourfutures.space/how_to_register_for_step_3_usmlecjk2n.pdfIn PDF document text
    • http://loginwithfb.site/buying_a_house_for_dummies_2020gu63h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/brand_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/83951833057.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/cat_on_a_hot_tin_roof.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/12663395114.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/patumetegapu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF1 5080 bytes
SHA-256: 426e0bb33fb9d400c58b86f0598594d9969309020d51b71dcb3b62e4f7ff3d0c
font_01_sfnt_off0001004f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004F 11512 bytes
SHA-256: 1b2be6bda6d2e757502dce12128541051509d3673b0d7b0ab1dd3e06f6f112ba
font_02_sfnt_off0001260b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260B 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953

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