Malicious PDF — malware analysis report

Static analysis result for SHA-256 209e39e351fc4bed…

MALICIOUS

PDF

94.7 KB Created: 2021-03-16 15:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d19ba39faa317bbd861a2e1503df12 SHA-1: 73f830509667fd21718cb743924f3fb266c9f5ea SHA-256: 209e39e351fc4bed928fcf31df593ec0f26fae57d1183902d0790a56e722755a
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many pointing to potentially malicious domains, suggesting it's part of a link farm or phishing campaign. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest the document's purpose is to redirect users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=que+es+el+area+de+un+poligono+regular
    • https://cdn.sqhk.co/bupewazadufa/GgdhbID/luzedasosufu.pdf
    • https://gadiziwit.weebly.com/uploads/1/3/1/4/131406086/37d8bac19.pdf
    • https://cdn.sqhk.co/jofijoju/FridtGu/18521502762.pdf
    • https://sililojakofatef.weebly.com/uploads/1/3/2/7/132712383/pofojip-kajenaru-bujiranivajiraj.pdf
    • https://xijananok.weebly.com/uploads/1/3/0/7/130740199/6911522.pdf
    • https://vawevoza.weebly.com/uploads/1/3/1/4/131482963/dadilagofeteferuj.pdf
    • https://cdn.sqhk.co/tuseliwi/chdSggl/jiffy_lube_oil_change_coupons_15_off.pdf
    • https://cdn.sqhk.co/noxisoture/cVidhgz/igo_gps_navigation_free_download.pdf
    • https://betozuwozoz.weebly.com/uploads/1/3/4/1/134108580/1905382.pdf
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/vuvip.pdf
    • https://zumuwezejulo.weebly.com/uploads/1/3/1/4/131455722/57902f1cc96e.pdf
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/91e2781.pdf
    • https://sopivumebisul.weebly.com/uploads/1/3/1/4/131413603/6209897.pdf
    • https://xedijekotaz.weebly.com/uploads/1/3/1/6/131606072/sobexuvo.pdf
    • https://mikuloxituxawe.weebly.com/uploads/1/3/1/4/131410747/deaef0f09851.pdf
    • https://cdn.sqhk.co/gijesali/ig26TL7/real_car_racing_2_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zarusegibitumet/18962117522.pdf
    • https://s3.amazonaws.com/tetenifeme/loxapagomabazigo.pdf
    • https://s3.amazonaws.com/sumesawoxajew/how_to_pair_bluetooth_onn_headphones.pdf
    • https://s3.amazonaws.com/mizeteb/fondant_roller_guide_rings.pdf
    • https://s3.amazonaws.com/mawesenasijoser/daranozevarolupuzokuz.pdf
    • https://s3.amazonaws.com/rotowan/kimya_bileiklerin_adlandrlmas.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011760.bin
154ddf130837e0724f7d19d7c299eb4693041c36b544d95ebcd53dfd11886f14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11760 5188 bytes
font_01_sfnt_off0001290d.bin
0e27ed270a0a83b9bfa6b752c581a9b706e366dd259fa8624995893b77f5305d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1290D 13864 bytes
font_02_sfnt_off000155dd.bin
12b429bd80a870601b18d3f58ab336c22e882471a777b59c34c13fc666c49c62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155DD 16240 bytes

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