Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a6152bd66a09c0…

MALICIOUS

PDF

82.1 KB Created: 2021-04-10 05:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b637db21d3f0b017015bbe7445035830 SHA-1: 1bf326c3fe19cfa68f88a77dea46cd208da8fe56 SHA-256: 73a6152bd66a09c04b6429f4f3b5729f69ac418bf32c5ec46617f895bf448a80
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 https://ponafet.ru/strik?utm_term=how+to+use+polaroid+bluetooth+speaker PDF link annotation
    • http://jidugisukeranav.iblogger.org/miwujokixegidalul.pdfIn PDF document text
    • http://komikewewi.iblogger.org/83020960866.pdfIn PDF document text
    • http://jaxakevog.22web.org/3898737590.pdfIn PDF document text
    • http://funiwigurogamu.iblogger.org/potty_training_in_3_days_guide.pdfIn PDF document text
    • http://bugarul.22web.org/bexaredokez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5fe3a7392fb3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_5fe885181f407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_606dd59eaf07f.pdfIn PDF document text
    • http://ronenepe.22web.org/5639339805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_604d386512b62.pdfIn PDF document text
    • http://sezewadiwun.22web.org/55674160060.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satovatusewonaw.rf.gd/30819155903.pdfIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_ae041dfccad54b5295b4e6f83341687c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10f2594-d48f-4ac2-aa1d-ee39e2478e29/balefapelexejuvilor.pdfIn PDF document text
    • https://d9c73feb-c945-4d97-9d44-ff62a4b57c47.filesusr.com/ugd/12056e_fe32b5ec25574798bc2a29d7c259d0f3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/398b6606-5c81-4c40-9431-157deb6217ad/cfa_level_1_topics_weightage_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/812a4d09-3d19-4c7b-8924-9c30cf40a649/chapter_test_a_the_human_population.pdfIn PDF document text
    • http://rawarawoxegig.epizy.com/28413878315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af7683b3-ad12-431f-81d9-619cfa893c5d/74462969615.pdfIn PDF document text
    • http://sinojerazofot.rf.gd/bharatanatyam_pushpanjali_song.pdfIn PDF document text
    • http://kevejabituzonub.epizy.com/62077573911.pdfIn PDF document text
    • http://bugotavuvogeko.rf.gd/sanagakerabebodi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E8 5304 bytes
SHA-256: 454532116048d266b6ea50ad3ac44aaf5c9215eb0bd82e2b6a3c412487de0e4a
font_01_sfnt_off000114f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F2 11036 bytes
SHA-256: 8b7f9c2252cd80c9d84b3ae4c3ea5079c6c5b050cf0e7626f150803969c3b0e2

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