Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd008343fd397e6e…

MALICIOUS

PDF

86.3 KB Created: 2021-02-21 06:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: acd0c1d057389981654df6ffdafea5d4 SHA-1: 1457772cfae10ecf16928f7fdcc42faeb59d75a5 SHA-256: fd008343fd397e6e4d4f78fb915fea7a2a3eadbbbb3e0c8197e2d68c4a99192c
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to link farms or redirectors, indicating a malicious intent to drive traffic to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan. The embedded URLs are likely used for SEO manipulation or to host phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://crophysi.ru/strik?utm_term=how+do+i+write+a+poetry+analysis+essay In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6028832a41ff5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392462/normal_5fc90c7f135e6.pdfIn PDF document text
    • https://nevipezuke.weebly.com/uploads/1/3/4/6/134652321/bc030a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470699/normal_5fdc246fa7a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_60226762e1174.pdfIn PDF document text
    • https://kukavijeri.weebly.com/uploads/1/3/3/9/133997324/xosukuzijuvileda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463266/normal_5fcb9edabe3d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jopomodilamego/leah_itsines_bare_guide_free.pdfIn PDF document text
    • http://zetipetarot.rf.gd/nuzovosi.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/dance_punjabi_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/auto_escola_doni_formoso_do_araguaia.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/fuvufa.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/dezamusibiv.pdfIn PDF document text
    • http://zumozitaporoka.epizy.com/fha_guidelines_equity_reserves.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A35 4896 bytes
SHA-256: 36f88ef163ba6f37e9b89723709eba94293f4c7220a366ad65226c9361b3ac7c
font_01_sfnt_off00011afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFA 10300 bytes
SHA-256: db9a6258951710b255c4d49738852bfbd2fb7a781505c12394ffa97263e679f5
font_02_sfnt_off00013e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E51 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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