Malicious PDF — malware analysis report

Static analysis result for SHA-256 416004f5fc2bbac5…

MALICIOUS

PDF

83.0 KB Created: 2021-09-04 00:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2a3474143b5c89f0b2261803d4a10e7a SHA-1: 0126a452d44e0de22e505059597f820385d082a2 SHA-256: 416004f5fc2bbac530c998f0a469afbe7b9da06884b4078c136515b68f0d8b3b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, including those hosted on compromised Content Management Systems (CMS) and disposable hosting. The primary goal appears to be directing users to potentially malicious or compromised external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bilalyapidekorasyon.com/userfiles/file/83857049155.pdf
    • http://land89.com/ckupload/files/32400953330.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/qcb98oh6ahe4o2kol7lof3vd1f/64520897334.pdf
    • http://marcth.pl/media/fck/file/86501465181.pdf
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff4339e83bd---bugiritegagirobife.pdf
    • https://markyatirim.com/resimler/files/58040607628.pdf
    • http://nhakhoasaigonkimcuong.com/uploads/images/files/kabivuwabozawetiwa.pdf
    • http://creative-format.com/upload/editor/files/34969277840.pdf
    • http://remont-elektro.eu/archiv/file/kilojivotekonurekidijateg.pdf
    • http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lipiletezuvuva.pdf
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085fc45f0297---91891017112.pdf
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869951c7204---49328794174.pdf
    • https://aodaixuan.vn/app/webroot/upload/image/files/13887394434.pdf
    • https://theatresaucinema.fr/uploads/file/16507417531.pdf
    • http://logistra.fr/ressource/site-image/files/diximomugafi.pdf
    • http://cadelupo.it/userfiles/files/rexife.pdf
    • https://nonbodepsg.com/uploads/files/59847372489.pdf
    • https://avela.md/userfiles/file/74165882212.pdf
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/c0qeua4bigf3t8nb0kdomnbqe0/negowonoluzawusorakemuz.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf1c921ac08---98475065911.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16092979384416---65821052675.pdf
    • http://bjxbw.cn/userfiles/file/86405563014.pdf
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/3jhq34nq5jei2bi7d8p314r987/rimozojixujoni.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=lombardini+ldw+1003+m+manual
    • 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://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_off0000e054.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE054 16792 bytes
font_01_sfnt_off0000f866.bin
f4776a28d13b795a2dc62c1edb08a648093cdcda03d9d26aafce34a8948d2e21
pdf-font-stream PDF embedded font (sfnt) at offset 0xF866 17764 bytes
font_02_sfnt_off0001265e.bin
b30dacae913d3a6fbb8a9c75900412505b4ee9cbf0704ea1ac318cf24ec7afa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1265E 10640 bytes