Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd70161920123de…

MALICIOUS

PDF

83.9 KB Created: 2021-05-14 00:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 86f22364d5921fa99ba06e29fea726bc SHA-1: 1b7ee276efa14d2706654c5f46dccecb24aaf184 SHA-256: acd70161920123de508761bd18530b8f7bf4f85b5385ccc887d122f5a06ddab0
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=old+kenmore+sewing+machine+models PDF link annotation
    • http://vannabanyavsedela.xyz/maxixapojapadevu6s9qu.pdfIn PDF document text
    • http://dlkmvkoenv.info/errata_sheet_formatprmap.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/zenasikimajipetebutarufer.pdfIn PDF document text
    • http://znasila.ru/coaching_and_mentoring_manuales9j5.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/dixugore.pdfIn PDF document text
    • http://coins24h.com/wojugelegaxikufomowu0m358.pdfIn PDF document text
    • http://xunopapazugatar.medianewsonline.com/tufuveduwaninet.pdfIn PDF document text
    • https://cdn.sqhk.co/xetokive/hcQiegd/61369768221.pdfIn PDF document text
    • http://awpmode.com/firehouse_subs_turkey_bacon_ranch_nutritionxw2mt.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/dhhicMf/17149294846.pdfIn PDF document text
    • https://govodiroruje.weebly.com/uploads/1/3/0/7/130775462/4338961.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d428a25-da86-44fa-8f13-5b0f09742281.filesusr.com/ugd/3649d2_2d26cc2e253a4437a38d05243a28bbae.pdf?index=trueIn PDF document text
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_fcd44051fa5a4cd882e8abc602db2856.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8549f1f4-3e4e-411e-8369-53f00e7b4ad0/51379348465.pdfIn PDF document text
    • http://dopovis.myartsonline.com/beauty_and_the_beast_piano_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728038d3-0a5b-4ad1-a7d2-c60a0a448a12/schwinn_airdyne_pro_buy.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_off000109d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D0 5536 bytes
SHA-256: 320942353230ec53010aa49f51b28a4e576a1f5c019c147a4a4fa78b9611bb21
font_01_sfnt_off00011c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C89 10840 bytes
SHA-256: 50f6261b06c419c54770e59723ff5365ada35ae17481e45125dcda8820d346b7

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