Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d582d9451057a7…

MALICIOUS

PDF

79.6 KB Created: 2021-03-14 21:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9833ec12c83cfca70c98486d2b746517 SHA-1: 810a2b38fad01d5cccb1dbda7b55fa52461e6a35 SHA-256: d5d582d9451057a7222af728593936eab85cc6485f80f85a86429210567013c3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9993

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://pelibifir.ru/123?utm_term=cuisine+royale+apk PDF link annotation
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/8fe6e9b3.pdfIn PDF document text
    • http://dhl-order.info/voneponatekuduwonijojuwotxpt9e.pdfIn PDF document text
    • http://teren.fun/3794606673301hg9.pdfIn PDF document text
    • http://sushibara.net/34734788924thmor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fc6284f66035.pdfIn PDF document text
    • https://vepezoroz.weebly.com/uploads/1/3/4/6/134605761/rarakesovezorujir.pdfIn PDF document text
    • https://bewotababuruga.weebly.com/uploads/1/3/1/1/131163836/311372.pdfIn PDF document text
    • http://good-production11.site/how_to_be_eligible_for_food_stamps_in_paeoldi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5ffa9540e6be9.pdfIn PDF document text
    • http://babblescoop.store/xunugizenoxibiraxegiwiy5g4s.pdfIn PDF document text
    • http://instapriz365.online/meals_on_wheels_castle_rockizm4e.pdfIn PDF document text
    • http://prodson.space/rijibokodakuwabarumout.pdfIn PDF document text
    • https://zujomesesewega.weebly.com/uploads/1/3/4/9/134902804/7ef731.pdfIn PDF document text
    • http://menformula.xyz/white_christmas_decor_ideas0gey0.pdfIn PDF document text
    • https://bupafenanibud.weebly.com/uploads/1/3/4/0/134042845/jedog.pdfIn PDF document text
    • http://teksol.xyz/swarm_of_cranium_rats_5etxw01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kovilowab/zesimajiganaxon.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/69282385601.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/delhi_disawar_2019_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/88773465154.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/algy_team_performance_collections.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/water_paint_brush_photoshop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/sojokexopazemevugiguzid.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 4884 bytes
SHA-256: 3485eeae0b8ee350298fd8e9d5f7088f7cae5b5ec58bd6c84a46cac65dd7512f
font_01_sfnt_off00010b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2A 11196 bytes
SHA-256: 8c50af2805768990e226a29232fa1d29cd72709d62251aa13b90a1cd36ddeb12

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