PDF malware analysis — malicious · 3df15dbd4c8f2143

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 03:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 071df665a83bbb599a6a13238e73b971 SHA-1: 736620333093dea4ce1c6d170ffa3a6518e86ec4 SHA-256: 3df15dbd4c8f21431dd5496f732322ef2ed105137d0eea74efcdc0717b99732c

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9117

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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 https://midufefew.ru/award?keyword=thank+you+ma%2527am+graphic+organizer+answers PDF link annotation
- https://cdn.sqhk.co/pofaxexaxi/uhjjjpV/pofafitebulomasevedimotij.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450438/normal_601d022e2f816.pdfIn PDF document text
- https://cdn.sqhk.co/vitimosugu/gdvjcgd/vr_zombie_apocalypse_survival_game.pdfIn PDF document text
- https://cdn.sqhk.co/wujakegu/jgb6mig/kepadujiwe.pdfIn PDF document text
- https://mamufitixiru.weebly.com/uploads/1/3/4/6/134640278/sarekuweriluzutigik.pdfIn PDF document text
- https://cdn.sqhk.co/posebozej/SRfdhf6/49773222395.pdfIn PDF document text
- https://pugulewex.weebly.com/uploads/1/3/1/4/131406013/vuvisek-vosatanapos-nujojabu.pdfIn PDF document text
- https://duxuxapuxud.weebly.com/uploads/1/3/5/3/135332588/1703425.pdfIn PDF document text
- https://xekukagakodepa.weebly.com/uploads/1/3/3/9/133999272/disozem.pdfIn PDF document text
- https://cdn.sqhk.co/xubipoxeguza/iibjfib/buxaxeduporod.pdfIn PDF document text
- https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/buxinor.pdfIn PDF document text
- https://bufagigakumeg.weebly.com/uploads/1/3/4/3/134313452/buxewegegabupujanu.pdfIn PDF document text
- https://zisibunekotif.weebly.com/uploads/1/3/4/9/134902626/5c817f8b6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/nodetuxapabara/90519004309.pdfIn PDF document text
- https://s3.amazonaws.com/rivazixexuguri/turozasenajuduvasajil.pdfIn PDF document text
- https://s3.amazonaws.com/sowirutelevolur/video_er_professional_chrome_app.pdfIn PDF document text
- https://s3.amazonaws.com/fowikorejodi/aaa_title_android_games.pdfIn PDF document text
- https://s3.amazonaws.com/sugowubuf/nuxojosuvofajuditije.pdfIn PDF document text
- https://s3.amazonaws.com/fogibi/voregajodajaguz.pdfIn PDF document text
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d713.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD713	6440 bytes
SHA-256: `2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb`
`font_01_sfnt_off0000e708.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE708	5604 bytes
SHA-256: `40431a451c4204b7ba59ffd3cde67166e22a2ef2d97cf1e6cd7e21fa1c889a72`
`font_02_sfnt_off0000fa1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA1B	10236 bytes
SHA-256: `63faba7edafb8e8be6fc0024d1c49ee0c11d1af5347e5e9bbb28a18d50c6015c`
`font_03_sfnt_off00011d26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D26	16036 bytes
SHA-256: `35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f`

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