Malicious PDF — malware analysis report

Static analysis result for SHA-256 010dad027548637e…

MALICIOUS

PDF

82.2 KB Created: 2021-03-27 22:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d21b24f20eb95054c5b9575d367654e0 SHA-1: 50707c3a0e0920577af931f55517fc3ebebe8417 SHA-256: 010dad027548637e4951bef62a1256a538a3ac7ca8c20135d8edbcd47992e22e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_URI' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful content.

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
  • 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://vilenefex.ru/aws?utm_term=miller+spectrum+375+plasma+cutter+parts PDF link annotation
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/9cc46.pdfIn PDF document text
    • https://cdn.sqhk.co/rosubeno/v3MDogd/92087410442.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/jcojgMd/73419746998.pdfIn PDF document text
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/08accb.pdfIn PDF document text
    • http://palopepidek.mypressonline.com/sap_bpc_10._1_embedded.pdfIn PDF document text
    • https://miroguwitofenev.weebly.com/uploads/1/3/5/9/135958286/vexup.pdfIn PDF document text
    • https://cdn.sqhk.co/vinikawikuve/Wij5ig7/gegidonewepamidiful.pdfIn PDF document text
    • https://guxuperotasase.weebly.com/uploads/1/3/4/3/134311101/kelujaripede.pdfIn PDF document text
    • https://logutidukikov.weebly.com/uploads/1/3/1/3/131380383/xejewud.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
    • https://s3.amazonaws.com/pipaneku/powerpoint_3_circle_venn_diagram_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/66445412368.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/99018430216.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/40641179383.pdfIn PDF document text
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_c280293bf0034f5dbf21d5bd611cd4f0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/swot_analysis_case_study.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/faerie_guidemother_mtg.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/garmin_nvi_2597lmt_update_problemen.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_ef3fba84011c4f92afa0aae85a02dc3c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gofiguj/24975450157.pdfIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_d9d4c9319ba5472da2f4c8f4f5e1b875.pdf?index=trueIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_e3371b16c08d4f3f821a83951f345c04.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23F 5116 bytes
SHA-256: acd4d7c3b05490305af467e052c3dc805dbf20a6878818484ed74a1ca98d39ad
font_01_sfnt_off000103ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AD 12492 bytes
SHA-256: d7eb8aec1af6272d8afc0183ba81fa9a1045174c8ebd0abee50e0a91c8e37046
font_02_sfnt_off00012d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D82 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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