Malicious PDF — malware analysis report

Static analysis result for SHA-256 58fbee822eb7379c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ea12294432ab86df6b25ae8e016b635 SHA-1: 44cb141adf155689d429079f2a379404bf440289 SHA-256: 58fbee822eb7379c9bd72f6cc1a0fffe03194acebdb5113218c5f4ce8361a33a
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate that this is likely an SEO link farm designed to manipulate search engine results or to distribute malicious content. No scripts were extracted from this sample, limiting further analysis of its behavior.

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.cc/pify?keyword=ff14+sightseeing+log+guide In PDF document text
    • http://files.virginiaasthmacoalition.org/uploads/1/3/1/1/131163684/5949820.pdfIn PDF document text
    • http://files.gnslivestocknutrition.com/uploads/1/3/1/1/131164202/8341120.pdfIn PDF document text
    • http://files.knowyourbusinessplans.com/uploads/1/3/1/8/131858592/8523756.pdfIn PDF document text
    • http://buwal.simplybirthclasses.com/uploads/1/3/1/6/131606227/fokajegebusa-velax-gaxiwod-rajolafamowaxe.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/1/0436/4537/0518/files/autocad_vs_autocad_lt_comparison_matrix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/rounded_concrete_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/bepuvabuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/60568702375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/spelling_bee_word_list_for_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/xawabebekixotananilaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5555/4458/files/bekepaguxuzepixavasufuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/modudiserufagiwixasanaliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8732/1505/files/jemix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/lutebusavimavob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/26406681522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/govetokiwabisitumamopepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/80446185639.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 6

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_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 4960 bytes
SHA-256: c02fc65a0ca50a4d9670b7b2b766939e19c4292fdc2b023adadc077df2501d2b
font_01_sfnt_off000076cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CD 15632 bytes
SHA-256: be0181317d54f15773b31b4636573418bdc71b02f102f037f34ab0114d518410

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