Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c23c7702747c04…

MALICIOUS

PDF

107.6 KB Created: 2021-03-15 05:26:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 48c200d38ed4e7f85abb7a82a2f1fef7 SHA-1: ce020ba7b894fa0d14ed1c5bad466ed342d66386 SHA-256: 12c23c7702747c047636483f694825ba45082838915e7d1f2d98773ac9fe1b66
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/wix?keyword=the+ph+miracle+pdf+download+free PDF link annotation
    • http://cocobuka3.xyz/59427087008jc6hx.pdfIn PDF document text
    • http://grampus-shop.com/asrock_h61m-_vg3_bios7cwfi.pdfIn PDF document text
    • http://reznitskygallery.com/2014_jeep_grand_cherokee_service_shifter_fix072g2.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/falevi/binary_to_bcd_decoder_datasheet.pdfIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_6a675b5acfac43429f9071b5894ae445.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jebokizez/datememopurivijuz.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/nifibaxutupupemenuzozanal.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/what_intermolecular_forces_does_nh3.pdfIn PDF document text
    • https://729282ec-1290-4cbc-9302-cf8a24acd4c7.filesusr.com/ugd/42c189_b8db09b8af6542fb99f9209984fde3ca.pdf?index=trueIn PDF document text
    • https://77bc4ea4-de20-41c0-a463-a5315db628d9.filesusr.com/ugd/2c69e3_19182717a4524605aba33e702c68b6a4.pdf?index=trueIn PDF document text
    • https://68fdcf0a-b1f0-4758-9edf-48d2be6d990b.filesusr.com/ugd/ac51ce_61cd1e73ba1c4c26b29bd0373fc7c042.pdf?index=trueIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_8387f8557f9d4bcaa9031600ed30ab6d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d295df7a-6b06-49c7-92bf-e441ead82961/washington_state_weather_april_2019.pdfIn PDF document text
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_d5da48e3cf204ab0918ba7ba1d2633e2.pdf?index=trueIn PDF document text
    • https://9539e3d7-93ad-434a-85ac-22bd9bdb82bb.filesusr.com/ugd/df7b34_67cf5e584840466f9edcf61d93012661.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3fdf81-edce-49f3-9775-869e093f2ca3/nodux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b2f9f2e-a5a9-4baf-bb9d-c5566356f954/sakomawolapemeze.pdfIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_9d5321bcce34482cb2646909b7ca7952.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5acb8a59-4b82-437a-98ea-bfacfccfe354/98338025646.pdfIn PDF document text
    • https://efed9c07-4553-4484-a419-1b844d271aeb.filesusr.com/ugd/6f475a_b75198b88e9646d7ae49104fb5bb2302.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f794fbbe-7a73-4afc-8521-3839296a6f12/neato_botvac_d3_filter.pdfIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_e3786c06cf544869895922812ef7d984.pdf?index=trueIn PDF document text
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_2f825533b68f4798aca6406dbeb97404.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lepefi/65231276741.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_off000164fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164FC 5260 bytes
SHA-256: 76724761261f3d4bf87d3872406652e94276768278d266a075592fdd637f3e41
font_01_sfnt_off000176c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176C2 11948 bytes
SHA-256: a1d26a0b63c2eb9a41f98d43732fc1df04a7b5b285d5fb5bc72e9e1cee3f327d