Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0679dc0f6009db…

MALICIOUS

PDF

39.9 KB Created: 2020-06-17 09:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: f55f4ecd81c9a4813711d9483985c83e SHA-1: 6e6c85a024a8041813d5dca1e63ccf0339db395f SHA-256: 3a0679dc0f6009db7674d764ed6e49db661e60b946198d9a71ee5a9e783422f1
104 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which follow a pattern of numeric slugs and are hosted on domains that appear to be part of a link farm. The document body, though partially corrupted, contains the phrase 'Tutorial hacker evolution' and references the authoring application, suggesting a deceptive lure. The primary intent appears to be directing users to a network of malicious websites, likely for phishing or malware distribution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://rhiannongower.com/uploads/1/3/2/6/132681204/132681204.html#tutorial+hacker+evolution PDF link annotation
    • http://ag.jf1788.com/uploads/1/3/1/8/131871531/rumifelevogebado.pdfIn PDF document text
    • http://pop3.pw-rostal.eu/uploads/1/3/0/2/130271030/wamofuvibatusotufizu.pdfIn PDF document text
    • http://strengtheffect.com/uploads/1/3/0/6/130640159/1c8a6c613a96fb7.pdfIn PDF document text
    • http://mail.allaboutoilstore.com/uploads/1/3/0/6/130640059/bopomi.pdfIn PDF document text
    • http://hostmaster.orsondeane.uk/uploads/1/3/0/2/130289778/d7ca236f7e.pdfIn PDF document text
    • http://2thepoolhouse.com/uploads/1/3/0/2/130270832/6b974163564e.pdfIn PDF document text
    • http://mta-sts.mail.livingstongospelhall.org/uploads/1/3/1/4/131437833/e720bee3.pdfIn PDF document text
    • http://kernneuroscienceconsulting.com/uploads/1/3/0/4/130489297/rusosigaril_likafolugax_lerofegise_jojobelixivezup.pdfIn PDF document text
    • http://maniglowco.com/uploads/1/3/0/7/130738855/4012470.pdfIn PDF document text
    • http://craftyourvoice.com/uploads/1/3/1/3/131384484/3300333.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00005e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 4664 bytes
SHA-256: 09cfdc397b285cf5fdb292cfaf07620946cc814529ffd248dd97a71bbf91dd4d
font_01_sfnt_off00006e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 11312 bytes
SHA-256: b455e4922ab665c2374d784a029b78a66acaedfcf656cf1417775f99623ea92e

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