Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aaacc1201175a05…

MALICIOUS

PDF

83.0 KB Created: 2021-03-17 12:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c3dcb3850a5d024b051dcce4f3f4461 SHA-1: 75b957647e62eaf5ff8083402ee8eef40912d2a0 SHA-256: 6aaacc1201175a05156269e25c64a68406f5c222b4d30a6174a537d88b6ff11f
186 Risk Score

Malware Insights

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

This PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to a movie title, likely a lure to entice clicks. The presence of multiple PDF link farm heuristics and a high ML classifier score strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 6

  • 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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wix?keyword=idhu+namma+aalu+full+movie+simbu
    • https://kogamawuxeg.weebly.com/uploads/1/3/4/5/134581879/3824625.pdf
    • https://dolepaxutafajur.weebly.com/uploads/1/3/0/9/130969408/3187935.pdf
    • https://dedolodaramolon.weebly.com/uploads/1/3/1/4/131455072/395467f7604f.pdf
    • http://baxosemot.iblogger.org/laxopokizowuf.pdf
    • https://manomukujoputu.weebly.com/uploads/1/3/4/5/134517900/4bc90801c05679.pdf
    • https://tofudilasikota.weebly.com/uploads/1/3/0/9/130969343/bdb4546d6872926.pdf
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/gademoxu.pdf
    • https://xasuzetevoke.weebly.com/uploads/1/3/2/6/132681443/doxuse_puwifagumekil.pdf
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/zobanemufos.pdf
    • https://xaburopufazig.weebly.com/uploads/1/3/6/0/136051881/zuzuderag-pusimu-jebuw-xuvosire.pdf
    • https://lirodute.weebly.com/uploads/1/3/1/8/131871659/5572056.pdf
    • https://bununijadepijag.weebly.com/uploads/1/3/5/2/135298825/kugosewoxodaj.pdf
    • https://kojulijorivo.weebly.com/uploads/1/3/4/3/134329781/gitatira.pdf
    • https://nezozavigarej.weebly.com/uploads/1/3/4/7/134727028/tisokin.pdf
    • https://vufuvato.weebly.com/uploads/1/3/4/7/134718288/5431910.pdf
    • http://salizurewaki.mypressonline.com/77164053623.pdf
    • https://xekekulok.weebly.com/uploads/1/3/1/8/131857590/fc12b.pdf
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/tuluz.pdf
    • https://ruxibini.weebly.com/uploads/1/3/2/6/132680870/2976602.pdf
    • http://fezelegafefuv.mywebcommunity.org/locate_the_centroid_x_y_of_the_shaded_area_9-59.pdf
    • https://wetusaseri.weebly.com/uploads/1/3/5/2/135297966/powiri.pdf
    • https://novifutifodex.weebly.com/uploads/1/3/1/6/131606636/nakuz_bipenoreteloxik.pdf
    • http://sutezesibopixiv.medianewsonline.com/7724325329.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vusevupitiwo.rf.gd/wumugagifuxijafepep.pdf
    • http://zesafemumibow.myartsonline.com/sun_joe_spx3000_will_not_turn_on.pdf
    • http://tujulerika.epizy.com/repopibirim.pdf
    • http://sogoxutagejuno.atwebpages.com/why_did_the_renaissance_first_began_in_italy.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_off0000f15c.bin
89e1cfdec429c538ef088f1742525f73a413aa8b066aaf9c567a9467be351770
pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 5188 bytes
font_01_sfnt_off000102e7.bin
58c8835f91c54f974e96da9363b473ae48db4ced0b3aaacdb69d38f41b0a3a7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x102E7 10916 bytes
font_02_sfnt_off0001287c.bin
4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349
pdf-font-stream PDF embedded font (sfnt) at offset 0x1287C 16164 bytes