Malicious PDF — malware analysis report

Static analysis result for SHA-256 17aff1d88bb10dc7…

MALICIOUS

PDF

91.9 KB Created: 2021-08-05 23:35:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a320f7c5110d4c04e2b093f5194e6e42 SHA-1: fcb3ddcc71b33d568a6cd99f5e7d3c424582d868 SHA-256: 17aff1d88bb10dc7155bceb5233ba5630902f4f748e65a3ba54d9ed8d961e0d1
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external links, including a link farm hosted on disposable domains and a link pointing to compromised WordPress upload storage. These elements suggest an attempt to lure users to malicious sites, likely for phishing or to download further malware. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8363

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://accessoriesunlimitedinc.net/catalog/file/72455895308.pdf In PDF document text
    • http://promocode.lu/userfiles/files/xubiridox.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/61082210942.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c91fce7c253---zageta.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/82279386363.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a635ab879---wonurug.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/ribatatekuwu.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/b81a3b122b60868fd3d981c11a8283cd/podisemuzipusibezosavud.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/sobivebimez.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/48361e5391519d29d96a7d047a3d8415/65017749720.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/6be1eaa7828afc2d36bf2c9542099c28/37818245898.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/0e6a9253b5b9785677f0bc9e8515fd84/zolabavemixibigijapus.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/zapufugokolizip.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3000ed0de---lenotuwopogerelaburif.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab77aef1dd---66233462892.pdfIn PDF document text
    • http://amandatour.ru/js/ckfinder/userfiles/files/71536198687.pdfIn PDF document text
    • http://asianmosaicnyc.com/userfiles/file/sodonoranawovirajisomex.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/34588179044.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/a4da5ccfeb65b000800dd6fd7ad77b0a/pejujokalej.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/32103665156.pdfIn PDF document text
    • http://flambotour.it/themes/userfiles//files/fuxadir.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/tibavekavime.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/bedb6db2d64d353b6e160324d321d934/2324290015.pdfIn PDF document text
    • https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/fsg9fbsjhu1qc2t7bkun7ophpe/15362435571.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/bupajebomazesilam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=download+survival+on+raft+ocean+nomad+simulator+mod+apk+android+1PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF572 16132 bytes
SHA-256: eb83fb48a2f60ac59fad768156047f025764cad4052c8f34695a9c8dd2456ad8
font_01_sfnt_off00010ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE4 11180 bytes
SHA-256: e87c4ea270d81c4ac42189922299eeca7192b35e05d4b1cffbc3f45564c0a164
font_02_sfnt_off0001252a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1252A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D3C 17592 bytes
SHA-256: 0b1380a37bd8d18c9a8ebc7961051021288a0c3c6b43c391d57d4ecb24153b3b

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