Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f949c123f4b048d…

MALICIOUS

PDF

76.3 KB Created: 2021-04-05 15:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ad0d8e04da2b3a033ab36edd949cb404 SHA-1: 5a3c5a73b281ef752947a21d06bc5e174d84c42a SHA-256: 2f949c123f4b048dedae579be62d7bf34ee0b4fb0f99446bcf212daa181edb46
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to other PDF files, indicating a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://golowaki.ru/strik?utm_term=2008+jeep+grand+cherokee+remote+start+not+working PDF link annotation
    • http://babbieshop.ru/ubiquiti_nanostation_m2_default_ip_address59q2n.pdfIn PDF document text
    • https://bamewubi.weebly.com/uploads/1/3/2/3/132303354/mutowonofeke.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/9659723.pdfIn PDF document text
    • https://sududonoli.weebly.com/uploads/1/3/4/9/134902305/1290740.pdfIn PDF document text
    • http://romeoplanet.club/no-nonsense_algebra_2nd_edition33efn.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/321810.pdfIn PDF document text
    • https://gupoxebexu.weebly.com/uploads/1/3/4/3/134337811/kewijexekim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64467285-924a-4cab-9f1a-f0e0a9c7cf48/how_to_fix_a_small_engine_pull_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8db058f7-ac04-438a-b192-a7c2da6c5a35/78998095082.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/34906349654.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/63315720820.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/kebuletulabina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b9016c0-a902-4923-bba1-5a8ed479e5cb/smoothie_recipes_with_yogurt_and_protein_powder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f769fa3f-2844-4d65-8a69-69f81704fb10/is_the_dmv_knowledge_test_hard.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/degewujetavizireke.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/sujilowagafureru.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/bracketron_bt5-_548-_2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/jeguxosedavoroxopubelozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24a1301a-307e-46d0-9410-4ccd128dd04b/four_winns_fling_owners_manual.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_off0000e92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92C 6060 bytes
SHA-256: 6e264bf7b83afd75275681be47149f7660d0b4286871fd8035df5e169e2a687c
font_01_sfnt_off0000fdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB5 11128 bytes
SHA-256: b14eb941a5e89ff091cf74fe278e760158538bb68c91c856a40fb310eafa3fd5

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