Malicious PDF — malware analysis report

Static analysis result for SHA-256 235b360038d15469…

MALICIOUS

PDF

72.9 KB Created: 2020-12-11 15:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5defecf5ad66c92bd2ff18b0f27e3dbb SHA-1: 9ae71db154b49eea0b890f4e1834160a1f6b8087 SHA-256: 235b360038d15469a16a16c69a7a4f14fa6293e2c33eba14eb1c0a61fbc58c3a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to a link farm as indicated by the PDF_SEO_LINK_FARM heuristic. The primary URL identified, 'https://traffset.ru/aws?utm_term=beautiful+picture+frames+free', suggests a lure related to free picture frames, likely to manipulate search engine results or distribute further malware. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan.

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://traffset.ru/aws?utm_term=beautiful+picture+frames+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454543/normal_5fa1ca747f5da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454424/normal_5fbe3374766c8.pdfIn PDF document text
    • https://nunezexivu.weebly.com/uploads/1/3/4/4/134440215/zalisakivafe-fonoduvezuruj-kiradute-jelitixaponuri.pdfIn PDF document text
    • https://pedomolakikivo.weebly.com/uploads/1/3/4/4/134440841/tabiritisukunasi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5f9eee43186d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489263/normal_5fc09249eb17f.pdfIn PDF document text
    • https://sosuwijanifoval.weebly.com/uploads/1/3/4/5/134515130/2553712.pdfIn PDF document text
    • https://lomimasexoguxi.weebly.com/uploads/1/3/4/7/134736135/piwagevulej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481516/normal_5fb5bb60c9bbf.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://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe18f8bc819f1cf4a0db92/1606293754167/xulaguniluxetemoron.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a4096b97992eb57be95c/t/5fc812f46031f4738610282b/1606947572778/best_recharge_pack_for_videocon_d2h.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc153656609fd0ee79445da/t/5fc7245793ad1a48121591db/1606886488641/star_wars_galaxy_of_heroes_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dbcbbf71053ccb0ffb78/t/5fc42641173fb5383b26342d/1606690371476/49807324387.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58d04cd1e280355f3c276/t/5fcd328b6f0099009e6e0c5d/1607283340059/gain_followers_applications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c04e773c-97f0-4d7b-bd1f-bb42a4cf4e7c/48567717059.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae0cab79f442f22f189a/t/5fc41169173fb5383b229f0d/1606685039974/moxunumazidili.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FA 4876 bytes
SHA-256: 5f4c4a4c2f44cc3c113c2949b346a92552c7c5057f69d123e4d05662d7ff397a
font_01_sfnt_off0000e390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE390 10416 bytes
SHA-256: aeed61c3bd9034fa7a2fc6873329cffb61f15fd68a84d2c98c45209d89691970
font_02_sfnt_off000106d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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