Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfde64230f9a4e7…

MALICIOUS

PDF

71.2 KB Created: 2020-12-11 12:58:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2c0bb116412880089e47f9de7f406b45 SHA-1: 91780db746ce69107e085a1f8c8aca28582a2f2a SHA-256: 7bfde64230f9a4e7d4d4cd331979b33c0aa962552645120fb97b5851cc50e4c3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results. The primary malicious URL, https://traffset.ru/aws?utm_term=cute+barbie+doll+pic, is presented with a deceptive lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffset.ru/aws?utm_term=cute+barbie+doll+pic PDF link annotation
    • https://katatowuli.weebly.com/uploads/1/3/4/8/134879603/jatag_bumekenobilumid_davofesugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_5fb499ef01405.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://uploads.strikinglycdn.com/files/04831602-2644-4285-b305-1e78335a82ac/sewosozawuxumuda.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe07724e98326c02d70bf5/1606289266698/water_is_the_essence_of_life_quote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a15bb2ec-fbf8-4369-b811-b15dc33d047d/bitipulixesam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cfdc6cd-c9df-4663-8077-fc207a603f0e/lyrics_of_fresh_prince_of_bel_air_song.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/pediatric_pneumonia_guidelines_2018_india.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52571d26ff1194f8f7eca/t/5fd1d4829a9e5443ac7ba881/1607586948834/zexejilopufabe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64f06116eb00e3c70da9e/t/5fcc987ac00f007ceae2f368/1607243899822/72577083159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91d75c0-7127-40ce-b74b-bce43e102efb/magnetic_messaging_login.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC1 4828 bytes
SHA-256: 63ac477be66409c4018a8b7f88dd9ba3568932c55ee619d678b655e2750778c4
font_01_sfnt_off0000dd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD39 11048 bytes
SHA-256: b2da210bfc571d0f8274be3a31f5e4497f9c94aa85586f23d980ed0311424cf1
font_02_sfnt_off0001029a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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