Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0f72235ea2f3b1…

MALICIOUS

PDF

46.5 KB Created: 2020-08-13 23:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58b786b8e3c8524739f530dd88e504b8 SHA-1: 8b27ea76bcdd0939ed619beb2eebc981b1d922d4 SHA-256: 0b0f72235ea2f3b14279722bccd9f4399bceef8e58d783963fb0fa640b0a75f8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for phishing or malware delivery. The presence of a large number of external PDF links further supports the SEO link farm and redirector lure pattern.

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=choom+choom+chanana+baje+song In PDF document text
    • http://files.artistginasouthgate.com/uploads/1/3/1/1/131163738/pojokoku.pdfIn PDF document text
    • http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.pdfIn PDF document text
    • http://files.jeffreyscheuerermemorial.org/uploads/1/3/1/6/131637953/gatevutudowizag.pdfIn PDF document text
    • http://files.bakesfj.com/uploads/1/3/1/4/131408204/c630533e9b7a489.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wubovunodokateneretubuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1694/4796/files/37860448322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/dark_souls_2_soul_spear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/joxemikajawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/ruketutanafenififodawiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/satyanarayana_biochemistry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1376/6296/files/79534728367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/gozebalavumujom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/convert_jpg_to_vector_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/gafuforuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/85767039155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/liwejegenetaxewifo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 5204 bytes
SHA-256: ae4f25fa8af89e53cf064c69964e4df68d8b04162851654c3b35462ba6b3cae4
font_01_sfnt_off0000715d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715D 14920 bytes
SHA-256: a60e0601a31c5ab7d8519b20a1701f690330218a206cffe0f1acb57a621a221c
font_02_sfnt_off0000a059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA059 3128 bytes
SHA-256: 4ec9c7beba50956a9728688adc38dc975961b47a86a0610f027f4e065074693e

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