Malicious PDF — malware analysis report

Static analysis result for SHA-256 add62694b42bc34d…

MALICIOUS

PDF

74.6 KB Created: 2021-03-21 01:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 40f818b3ec363bbae78190b5b34aa2d2 SHA-1: 1700354c1a3909eddf87c7fd98fc4dd675d83a42 SHA-256: add62694b42bc34d5dc735edcfd034f2372c7e5af96e9be62bb3ad9ebb486b3c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1105 Ingress Tool Transfer

The PDF contains a large number of external links, many of which are disguised as search results for plant identification, indicating a link farm or phishing attempt. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' strongly suggest the document's purpose is to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=distinguish+between+c3+c4+and+cam+plants.+give+examples+for+each+kind PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408187/normal_603bc8907230d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410714/normal_5ff0b05e0d5c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414498/normal_5fdfa9ad5b9f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_60259ad392605.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/ePia5ji/vanevujudabupovodosixuzup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452593/normal_60300d78d8438.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/fNN93gj/pan_africanist_congress.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_60567626147b9.pdfIn PDF document text
    • https://cdn.sqhk.co/migukosodaza/gdjggc8/6035055451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499942/normal_5fe85826dae83.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/xazarujokemus/boots_ameliorate_transforming_body_lotion.pdfIn PDF document text
    • https://f4e740b0-69d0-4d5c-a0c7-362dc6b2ad6d.filesusr.com/ugd/0356fc_6504d89fd9e94f15bb9b99c7cf466796.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuzed/where_can_i_purchase_bass_pro_gift_cards.pdfIn PDF document text
    • https://334e481f-4595-4613-8514-cf1b68b0f675.filesusr.com/ugd/a5bb32_fb9e154a06e84daabc76be6ac1624183.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/why_read_the_handmaids_tale.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/the_one_thing_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/venivija.pdfIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_245bea1686fa4765b33bd7edae3013d3.pdf?index=trueIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_197bd2dd0a83475fa8ef09d1763b1f66.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/teri_aakhya_ka_yo_kajal_lyrics.pdfIn PDF document text
    • https://8ed7ad90-0d0e-491f-9c15-1f6cd5a61d18.filesusr.com/ugd/f1a804_ef55cf6cd66d459a9433b237176a4833.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE365 6276 bytes
SHA-256: 4fc3901a3e876e53a89b7b79372f584813453738e434fb258e0e626004e5e80d
font_01_sfnt_off0000f8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C1 10484 bytes
SHA-256: 3e2ebc8c3b88135a38f2c9ab93e1cd951de81a832198a981bbc6dbb40952f1a3

Open this report in the interactive analyzer, or submit your own file for analysis.