Malicious PDF — malware analysis report

Static analysis result for SHA-256 022d69f58c67329a…

MALICIOUS

PDF

96.4 KB Created: 2021-07-15 23:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9712267493dc744fd1ea971b7083b1f2 SHA-1: fce3f654d10df24a594515dde1c93e1535829892 SHA-256: 022d69f58c67329adbbb0a90a1675d5cee52e8197b91292af625f1e645672b0f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites and potentially disposable hosting. The primary goal appears to be directing traffic to these sites, which could be used for phishing or other malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

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://drvishweshwari.in/userfiles/file/16125660295.pdf
    • http://orderkiwicafe.com/uploads/files/84573116254.pdf
    • http://fitviewer.biz/files/file/nuvajerememujekosogazofiz.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071bb19acc96.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/1fe24c5aaf2f84a5a16a89830f008a14/pitave.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa536cacf21---zasikudogoluzawix.pdf
    • http://vitaminyplus.eu/files/file/sovajazukabebarimulor.pdf
    • https://ctsgroups.asia/images/file/vivumapogefifedapodupa.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acfa93222d9---49133406126.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7834495e73---89525173268.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160b493a74ccd7---disagedasu.pdf
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c30a05074d---28996034194.pdf
    • http://agiteam.org/clients/b/b0/b0c4817036ef1cb73596cc935f3fa86d/File/87441295515.pdf
    • http://compsult.net/userfiles/file/26558838616.pdf
    • http://moonlightmontessori.com/upload/files/2626457203.pdf
    • http://herium.net/FileData/ckfinder/files/20210629_35047E363E2A0364.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609efd5e4937e---dafavujebabede.pdf
    • http://huefpdf.org/upload/file/senaniposibaruwabisexu.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082adeebe316---56139776457.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc0a6ea2ca---21835417463.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d955ee07b---zizaxunidafibuxom.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160d55d83881bf---84123240738.pdf
    • https://hoatuoi360.vn/uploads/files/56548855225.pdf
    • http://cuatudongbinhduong.net/uploads/files/23820546072.pdf
    • https://watertorens.nl/userfiles/file/xaxege.pdf
    • http://brainbond.ro/userfiles/file/83583150862.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=spanish+tortilla+with+cheese
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd3b.bin
d1b2ce7b44c134d44c9c85654fee42ba09f67fa098531ec58805800763302e9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3B 10632 bytes
font_01_sfnt_off0001158b.bin
0c133022d1e9883d2ff7035cf84f1fa0be9cfa0d671266bc5a940283bc0f9855
pdf-font-stream PDF embedded font (sfnt) at offset 0x1158B 16376 bytes
font_02_sfnt_off00012bb3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB3 16792 bytes
font_03_sfnt_off000143c5.bin
b197f680e10997f203927457b4137f05be4a5368a243be416fc8dd1331284753
pdf-font-stream PDF embedded font (sfnt) at offset 0x143C5 17880 bytes