Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b56e206f44645f…

MALICIOUS

PDF

77.0 KB Created: 2021-03-20 01:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9aef47b9023f620a508f5954818e2c94 SHA-1: 59a7529dbe714a1c38bc9be6e3fa0624f10e3057 SHA-256: 92b56e206f44645f02894b3dabebfefc62a4c5da4f457ece142adab998c9e58a
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-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://mezovuduw.ru/123?utm_term=mcdonalds+grilled+chicken+salad+nutritional+information PDF link annotation
    • http://cadenalia.com/bijanozivuxififataxi6zcgj.pdfIn PDF document text
    • https://cdn.sqhk.co/xiponamoribo/ifidu24/berozalaniguworarubemez.pdfIn PDF document text
    • http://milatepe.medianewsonline.com/sat_maths_practice_questions.pdfIn PDF document text
    • http://mylevel.store/health_economics_group_benny_card21otu.pdfIn PDF document text
    • http://dutov.org/14249013072cq6e7.pdfIn PDF document text
    • http://biomaniks.website/jegopogatinomewuduvzc6e.pdfIn PDF document text
    • http://fakaripeti.xyz/long_haired_miniature_dachshund_puppies_for_sale_ukbjj99.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/tebesutem.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/dulewatozipiboregusev.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/gdihMQr/fimemufugusaboremoxikurab.pdfIn PDF document text
    • http://bandalet.club/creative_destruction_gameplay_iosuobjz.pdfIn PDF document text
    • http://crysety.xyz/bojojafofujegagonnrih.pdfIn PDF document text
    • http://openplafond.xyz/rodifabizoxe3bjvb.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://aefbb2f1-1cfc-4a48-aab2-d72547d84173.filesusr.com/ugd/2f3ac6_0d95eaffe1664e0292906fd1fb29a542.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde7b037-9171-4460-86c8-d9b5040eb1c6/what_is_the_climate_like_in_portugal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be617473-bbb8-4d40-ad7c-b7831aaa0d3f/59595793628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bee0f4d-adbf-4bec-bf84-071a94cb1d0d/77085850803.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_2ca0421c4d2f4bfebda7d56e71472c96.pdf?index=trueIn 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_off0000e1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C7 5388 bytes
SHA-256: 8aeb49b8eab8113f22b29ec4cdff3e6bded2e17393598fb6db7f34fb3462ad3d
font_01_sfnt_off0000f3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 10600 bytes
SHA-256: 476f3893077796a97a2c06a8a64fdd9539485a8c182f4adc04e64135b5fcca94
font_02_sfnt_off00011833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11833 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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