Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fed43fe8b78fa59…

MALICIOUS

PDF

76.7 KB Created: 2021-01-14 12:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6a0bb12075eb4dc015732707266878f2 SHA-1: 119a38d81458b935c57d5cde6f86e072f162a62a SHA-256: 7fed43fe8b78fa59a37366effc06ca476241536f32b720f248a6678252dce8ec
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to disposable domains and redirector infrastructure, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious sites or download further payloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=megalovania+mp3+download+paw In PDF document text
    • https://gubuwogufulero.weebly.com/uploads/1/3/4/6/134608521/2ffafb63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373519/normal_5fe51329397a0.pdfIn PDF document text
    • https://cdn.sqhk.co/tajelezoja/jhfgexe/domobopakagijokofe.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/vebibigotoxatunanavo.pdfIn PDF document text
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/wuropu.pdfIn PDF document text
    • https://waragorejitise.weebly.com/uploads/1/3/0/8/130813548/68b63e969276b.pdfIn PDF document text
    • https://zujamapetot.weebly.com/uploads/1/3/1/3/131381682/solusagodur-torujejutof-jepajexaloriwip-jusumekavagufob.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/oeiegd4/zukuzilomozes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375518/normal_5f9116be5cf3b.pdfIn PDF document text
    • https://putoluxadap.weebly.com/uploads/1/3/4/7/134734973/poduzobemina.pdfIn PDF document text
    • https://site-1179390.mozfiles.com/files/1179390/31441766802.pdfIn PDF document text
    • https://sazadasixitabe.weebly.com/uploads/1/3/4/4/134404720/7978445.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/kuboki/dakofodifakasojaro.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC5 6440 bytes
SHA-256: 705377623a4c4344e02470fedf876d1ed6f0c7c0eac322cafb15afc9430d14bf
font_01_sfnt_off0000df88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF88 3296 bytes
SHA-256: 4368eabebabfdb991b63e1154100af29a4f7382a5fd32335b18b8e7f6f681ff8
font_02_sfnt_off0000eb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB68 5324 bytes
SHA-256: f8a3db8d70c21e4973998bda85dd516065b18a8b10619b36900cb8e88a66b37c
font_03_sfnt_off0000fda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA0 12048 bytes
SHA-256: 8fa03cad543a4579e0dc7401dcdaca16361c760ee8d70f7c63be11c675d062f1

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