Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a1711156a6532a…

MALICIOUS

PDF

37.5 KB Created: 2020-11-01 08:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f0e876c7ee202157d3f2a2c8cadae863 SHA-1: 0237b622c7994a48033eb4c75c9ff241332d3237 SHA-256: c9a1711156a6532a2f962886806f077a62cd8f24658c05acee75648fe37e7289
124 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically `https://ggtraff.ru/aws?keyword=millionaire+real+estate+agent+pdf+download`. The document body and heuristics indicate a lure for a fake download, likely to deliver a secondary payload or phish for credentials. No scripts were extracted, but the presence of multiple links suggests an attempt to distribute malware or facilitate phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/aws?keyword=millionaire+real+estate+agent+pdf+download In PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/4136194.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdfIn PDF document text
    • https://mututekabifu.weebly.com/uploads/1/3/4/4/134466573/wibuwekepifa.pdfIn PDF document text
    • https://nadosivilir.weebly.com/uploads/1/3/4/3/134316305/3b77e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_5f8df6f66f7bd.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/dozusepap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0953/9748/files/xawamotupegogimabesofor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8473/4883/files/gepunagotarovupodezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1608d3d6-349e-4787-9920-6812f652cfde/super_coaching_raimon_samso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3138/6041/files/operational_amplifier_and_linear_integrated_circuits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/5575/9527/files/xebifepogetexu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5428 5304 bytes
SHA-256: ff3fc0faa043b64ff3cf94b9532e3812af04bd10d11cb5ce142f19f9706a6561
font_01_sfnt_off00006660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6660 10180 bytes
SHA-256: d955a4c45cc3cedd5f35734dd87a7cc92388dc237de0dc526288c25a1d6db284

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