Malicious PDF — malware analysis report

Static analysis result for SHA-256 080051cd0a7f77e5…

MALICIOUS

PDF

98.6 KB Created: 2021-06-29 10:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f102c45ae111fc742e020daae1904912 SHA-1: 95f28e4e300ca3a7d52113008c8a03c2b335d631 SHA-256: 080051cd0a7f77e5ccc19748dbe91efd7c49c3b00e3672f15c4e6573236ba6bd
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories. Heuristics indicate this is a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The primary function appears to be directing users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jnafarms.com/clients/864068/File/dimoxuxa.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/45e176289e424b2edaabbc092ec7693a/85407677427.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608089edd45c4---38444481256.pdf
    • http://kinocosmik.ru/sadm_files/98207100357.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1607b79513beda---65228389415.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/7a5746dcd851d006b1b847494163bc64/fulukalosazawupemagujovab.pdf
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/c4b7d8cd7a28a7931336932fdab1a781/radijolajomid.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/chf5k3mj04n077512fr480f6i1/fuvaxixosuloxe.pdf
    • http://autodilykanka.cz/cmsimple/images/file/57563975948.pdf
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca2226e51f---50215029531.pdf
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/0aa16c8b0c5efdc8f4089697fe8ac1d3/97628139182.pdf
    • http://thunderstar.cn/userfiles/file/20210430235330919372284.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d910469ba7---vusexodewanogenipir.pdf
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/k41bhds2ukou446a4c2i8sn992/46632936977.pdf
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/t5rko81bh2ke2t5dbu16tv657e/92246630353.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/6d37cc519509c0558e01b0f53967053b/nibef.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/ead10d80cd06dfb27870b89564f66672/puvenigozazuse.pdf
    • https://1877painters.com/FCKeditor/file/50592358041.pdf
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160824382eed85---43502375053.pdf
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/nrs530gdf2bl5vqcmrr95ctri3/vorudilomonidoranogi.pdf
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075271801e29---5126895804.pdf
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/512sdiljagdc2790j72p2qqlj7/49094928209.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/a8a2187202089527d652d0ab1b46f05f/wexiziranukotu.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/4jtqfc9atcrv6ta12c1b1ter95/wadomubokiwokitowunudo.pdf
    • http://stellamaris.cz/userfiles/lubuzawemipolubon.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=dr+sears+fever
    • 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_off000105d8.bin
e168f0400f93e29b30128323a8209dc56ba82c53086612d32917223a4439ceba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D8 9812 bytes
font_01_sfnt_off00011b84.bin
0c133022d1e9883d2ff7035cf84f1fa0be9cfa0d671266bc5a940283bc0f9855		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B84 16376 bytes
font_02_sfnt_off000131a8.bin
d44cf9556170d59e5ba9b2a5df4a96650b8d578cd7a1458db433e2dca9288248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131A8 19620 bytes
font_03_sfnt_off00016463.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16463 16792 bytes

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