Malicious PDF — malware analysis report

Static analysis result for SHA-256 80acb4db245326d0…

MALICIOUS

PDF

84.4 KB Created: 2021-04-30 23:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e1c81935ea9438abad60fec74a1e9de5 SHA-1: b2a94f114845cffa9a6a16fb8e3d525502238a22 SHA-256: 80acb4db245326d04663fc15e981ec09a8bf3b7fb18c35b498b75ee3fd08aede
196 Risk Score

Malware Insights

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

The file is a PDF that contains a large number of external links, many of which are SEO-related. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users with promises of prizes or funds, requiring them to interact with links. The primary malicious URL identified is dugedepap.ru, which is likely part of a phishing or scam operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dugedepap.ru/strik?utm_term=vw+tiguan+service+cost+south+africa PDF link annotation
    • http://medgaj.com/97835695418suxy7.pdfIn PDF document text
    • https://fifubinagate.weebly.com/uploads/1/3/4/8/134854053/jadewu.pdfIn PDF document text
    • https://xoxilorimisutoz.weebly.com/uploads/1/3/4/7/134705863/3969521.pdfIn PDF document text
    • https://pimipile.weebly.com/uploads/1/3/4/8/134883166/da22aac2.pdfIn PDF document text
    • https://gatilesajegume.weebly.com/uploads/1/3/1/0/131070678/bulotepadike.pdfIn PDF document text
    • https://juwaxevepatasi.weebly.com/uploads/1/3/0/8/130874094/9789958.pdfIn PDF document text
    • http://50offstore.pro/jexibigerurozumimosukap9wnj.pdfIn PDF document text
    • https://kekidebas.weebly.com/uploads/1/3/4/6/134633427/xadop.pdfIn PDF document text
    • http://dom-bita.org/telecharger_template_joomla_3._9_gratuitquti1.pdfIn PDF document text
    • https://zowadadevifu.weebly.com/uploads/1/3/4/5/134597758/daropevavukakej-dinodujosap-fesedare-moxefebozonij.pdfIn PDF document text
    • http://avtoshtorki.shop/zixusidexifav5gqn0.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/rekorewexidiwo/nikon_dslr_d5100_price_in_saudi_arabia.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/31499727200.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/lee_sin_combo_guide.pdfIn PDF document text
    • https://0c6b7a74-1ca0-41da-943c-c268a208a416.filesusr.com/ugd/fef373_b5632ed2c99147d2bf6f33b8c78e6368.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pomaxa/69928548337.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/83078335468.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/gejob.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_ac84d3a0efdd4bcd993718c7fabb56a0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/lefazobololezaro.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7F 5228 bytes
SHA-256: b0fa1db5e52b6b0b1a7999604794952f650d258b2907648cceb9d340e96a3506
font_01_sfnt_off00011c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C68 11224 bytes
SHA-256: a9499d401761520be19f69aafcb927a9ade17e49b1a08397bfcd40567ce0fb45

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