Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d8fa48267bce04…

MALICIOUS

PDF

30.5 KB Created: 2020-04-24 21:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b29a6606ac664d5382a8926e30c34d59 SHA-1: 1e6038c1dd33c9ac0b89d222ca28ce2b6e982e21 SHA-256: a3d8fa48267bce049590c0fc15de01c858229b253b17589d1649d936ddc2442d
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document exhibits characteristics of a link farm, containing a large number of external URLs pointing to other PDF files. The heuristic 'PDF_SEO_LINK_FARM' indicates this behavior, suggesting the document's primary purpose is to redirect users to numerous other sites. While the 'SE_QR_LURE' heuristic suggests a QR code might be present, the document body itself is heavily obfuscated and contains the URLs directly. The presence of many external links, including the one to 'johnsonandsonsservices.com', strongly suggests a malicious intent, likely for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://johnsonandsonsservices.com/uploads/1/3/0/4/130489128/130489128.html#chakkwein+suit+1080p+video PDF link annotation
    • http://njeventind.info/uploads/1/3/0/7/130775352/wavanazibex-tuzoj-bukoni-dutuv.pdfIn PDF document text
    • http://msjohnsonscienceclass.com/uploads/1/3/1/4/131453019/443e1a94183660.pdfIn PDF document text
    • http://cnkmortgagefinance.com/uploads/1/3/0/6/130604919/vanevax.pdfIn PDF document text
    • http://halesforklift.com/uploads/1/3/1/0/131070147/dfe30a4cd0ed0.pdfIn PDF document text
    • http://monkeygripmaterials.com/uploads/1/3/1/4/131406222/natolupolonozugifak.pdfIn PDF document text
    • http://1healthsource.net/uploads/1/3/0/5/130538863/10549abbcc94.pdfIn PDF document text
    • http://lutanics.org/uploads/1/3/1/4/131407855/fipogipoxalerikod.pdfIn PDF document text
    • http://bengalipoker.com/uploads/1/3/1/0/131070238/ziwebamema.pdfIn PDF document text
    • http://teamwrightbrothers.com/uploads/1/3/1/1/131164555/1872394.pdfIn PDF document text
    • http://clarityofficeorganizing.com/uploads/1/3/0/6/130621382/futapijinami.pdfIn PDF document text
    • http://sud-zlaundry.com/uploads/1/3/1/3/131380756/aa9d89d04f32d.pdfIn PDF document text
    • http://bubblesoccergeelong.com.au/uploads/1/3/0/4/130476574/bexosuboxujixuvidov.pdfIn PDF document text
    • http://kcares.org/uploads/1/3/0/5/130588784/340b6.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C3 7400 bytes
SHA-256: e57d0a6015296b63c5940ce5eb186863693f2a7d276cbb34d9f736c3e7f6b40c

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