Malicious PDF — malware analysis report

Static analysis result for SHA-256 969cb1e9cd493aee…

MALICIOUS

PDF

108.9 KB Created: 2021-06-28 00:35:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 528dd5cdfb91c28885a856ba6a64c2a3 SHA-1: 457bebd99073fab047776f25c9c1c9106e69db36 SHA-256: 969cb1e9cd493aee070c16765a73c5b4f058933dd92d0a8ae91cd81c775cd622
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links, many pointing to compromised CMS upload directories and potentially disposable hosting, suggesting it's designed to distribute further malicious content. The presence of these links indicates an attempt to lure users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9718

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 http://waterlootour.com/FileData/ckfinder/files/20210613_02FDA9BC5EC1C1B0.pdf
    • http://kyanite.tv/userfiles/file/24332131333.pdf
    • http://panda-es.tokyo/yamituki-n/uploads/files/jomimobulasufekizukene.pdf
    • http://com123.vn/uploads/file/54397754059.pdf
    • http://nuraski.pl/wsg/userfiles/86643402874.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a264d451e7b---41944501471.pdf
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da53fbba19---78458316396.pdf
    • http://cepsagibyachtfuels.com/images/photos/goxavir.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd170bb0cc---31188948867.pdf
    • http://ytbozhuo.com/upload/file/290906571470.pdf
    • https://ebooksweb.net/files/file/49422639718.pdf
    • http://strandedtattoo.net/file/72226670839.pdf
    • https://mariellatriolo.it/public/file/21780044403.pdf
    • http://praconsulgroup.ru/pict/file/fujukimoni.pdf
    • http://newtarrytowndeli.com/uploads/files/95170685664.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/d22abdefddccf48b076c731c51bf7ea3/jevoxexezixuji.pdf
    • http://aj-logistics.com/stock/userfiles/file/30651419744.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072653f4f92d---jifivejol.pdf
    • https://hagepoorter.be/files/files/53318011988.pdf
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa5cc23197---setapejupozipojewixakunu.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/hh8bbpc8695i8sqc7ko7rh5eh1/wumiduzilaxomefedowaxuni.pdf
    • http://markasib.ru/ckfinder/userfiles/files/60710036224.pdf
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/23cc0e6c2ee51981fe19a0b79a748acc/27034748996.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=punctuation+meaning+in+malayalam
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ead.bin
6342a6ef69bd9afe28faf01bb2a9679e3880f95b55f4d9f193b9567be260dadc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAD 21604 bytes
font_01_sfnt_off00014760.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14760 16792 bytes
font_02_sfnt_off00015f71.bin
ee70be33f93f3ac8ab29af3de98803e713033b86478c081d6baf590aab5bd06e
pdf-font-stream PDF embedded font (sfnt) at offset 0x15F71 16212 bytes
font_03_sfnt_off0001753e.bin
120179a9c3994b8b8a46d60886be709db5d98467938eec3e401ce81a27f21b22
pdf-font-stream PDF embedded font (sfnt) at offset 0x1753E 10520 bytes
font_04_sfnt_off00018d2e.bin
e9b8679ba5a090dca5cdc4163e4626d27039ecd0588c94f853a62d8a1c582830
pdf-font-stream PDF embedded font (sfnt) at offset 0x18D2E 7504 bytes