Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be6dbc22a8d88a8…

MALICIOUS

PDF

42.4 KB Created: 2020-04-02 23:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 878bca8e08d74a5d7c29d73fe297983b SHA-1: 023083ab09f7bb24088fc2cb8b6e57a543e1dd19 SHA-256: 1be6dbc22a8d88a8da2cfd4c003a7f5454a68eaf3da7c91953222dc6533c1d28
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, indicating a link farm or SEO manipulation tactic. The primary heuristic identified a mass of external PDF links, suggesting the document's purpose is to redirect users to numerous other sites. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of specific user-facing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://traveltalentz.com/uploads/1/3/0/6/130620788/130620788.html#ekg+study+guide+for+nurses PDF link annotation
    • http://losangeleshollywoodtours.com/uploads/1/3/0/9/130969254/keliduto_fofuxuz_nevemuborigije.pdfIn PDF document text
    • http://artedevo.com/uploads/1/3/0/3/130323997/xufukivagebo_bavipudoboji_nenonos_xowid.pdfIn PDF document text
    • http://pringlesautowrap.com/uploads/1/3/0/8/130814101/93f11.pdfIn PDF document text
    • http://htownslams.com/uploads/1/3/0/7/130776413/2028306.pdfIn PDF document text
    • http://rnbkennel.com/uploads/1/3/0/9/130969399/xotezajoves-pomada.pdfIn PDF document text
    • http://ggsrazzledazzle.com/uploads/1/3/0/5/130547515/c4e60.pdfIn PDF document text
    • http://hippoenterprise.com/uploads/1/3/0/7/130776409/lezefadezevopogukuz.pdfIn PDF document text
    • http://hamzicphotography.com/uploads/1/3/0/5/130589227/3877274.pdfIn PDF document text
    • http://cookiedelightbyjess.com/uploads/1/3/1/4/131407369/76de340.pdfIn PDF document text
    • http://lindal.me/uploads/1/3/0/6/130639471/lebefeve.pdfIn PDF document text
    • http://namalitainternational.net/uploads/1/3/0/6/130639017/tawuwugepejaxifode.pdfIn PDF document text
    • http://etjanitorialservices.com/uploads/1/3/1/3/131379343/gakegimekuri_vogudubosados_puzolepebep.pdfIn PDF document text
    • http://farmandfig.com/uploads/1/3/1/0/131070631/woziso.pdfIn PDF document text
    • http://lqcluqualitycreations.com/uploads/1/3/1/3/131383928/dikulavugefej.pdfIn PDF document text
    • http://picturebox-photobooth.com/uploads/1/3/0/6/130620758/puzirudaw_diliviva_xelosirovo.pdfIn PDF document text
    • http://chinabankunion.com/uploads/1/3/1/3/131379945/8894fd8.pdfIn PDF document text
    • http://kantkollections.com/uploads/1/3/0/8/130813381/a3645cd8.pdfIn PDF document text
    • http://everest-edition.com/uploads/1/3/1/4/131437849/dufoluzawudumef.pdfIn PDF document text
    • http://jennettedemoura.com/uploads/1/3/0/4/130435729/dutakotejeti.pdfIn PDF document text
    • http://encuentrosccp.com/uploads/1/3/0/9/130969153/433687.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
🗂 Part of campaign: douglasenoblepainting.com 5 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C63 7828 bytes
SHA-256: 6678075276861697e421c553aade4b70f1f02fb3ce09f50ccdaccb5acbe36bab