Malicious PDF — malware analysis report

Static analysis result for SHA-256 d279186bae2ff6e4…

MALICIOUS

PDF

38.8 KB Created: 2020-08-14 09:39:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 393faeb0cb0d66c7e18c315ef40b6f71 SHA-1: 8e9a50f8c1bcac8520c2b61a5660f941d5c0be3e SHA-256: d279186bae2ff6e4b12093a7aaed66ee7fd00384c148e5749986e1ac84859c39
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. The document body, though partially corrupted, contains the URL that is also flagged as a malicious redirector, indicating the primary intent is to lure the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=guru+graha+stotram+in+telugu+pdf In PDF document text
    • http://files.angelapennisi.com/uploads/1/3/0/8/130814205/f57029ba.pdfIn PDF document text
    • http://files.vendettamotorsports.com/uploads/1/3/1/4/131437418/3317402.pdfIn PDF document text
    • http://vipazo.bristolbuildingcompany.com/uploads/1/3/0/7/130776873/gomogidis.pdfIn PDF document text
    • http://files.mtlclownfest.com/uploads/1/3/1/3/131380687/81f780f50.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/1/0429/0176/6310/files/xososivukeneku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/96731901976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/avantguard_750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/53316707739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/badlion_client_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/algebra_2_textbook_prentice_hall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/vekidakuseto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/99350974659.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF1 5488 bytes
SHA-256: dd974ae264a4ebfa90b05b9b926be618ce231de07c451bd994594dd417045096
font_01_sfnt_off00005f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 15140 bytes
SHA-256: 51734cfcfcae2b4edd40a92f00b0f125616ff6c26cfd4564fe1bfc80ca6ccb18

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