Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e58d7c343230b1…

MALICIOUS

PDF

51.1 KB Created: 2020-08-07 07:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a02a56e54fe1dbb551ff2b1c60424d02 SHA-1: a5190e621929ebdd1426419d683d01631bab2645 SHA-256: b5e58d7c343230b1a2d249a73ca7ce6849f3d5989b29cb796cbacdc6bbc34b0d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body text and embedded URLs suggest a lure to download further malicious content, disguised as a company presentation. The ML classifier strongly supports the malicious nature of this PDF.

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=company+presentation+letter+pdf In PDF document text
    • http://sevuba.decodemedia210.com/uploads/1/3/2/6/132696323/gidomudobome_wazulog.pdfIn PDF document text
    • http://jaraw.tropicalconservationfund.com/uploads/1/3/1/4/131482975/fegofeto-budedakibowune-xuwowopajulof-lawajiki.pdfIn PDF document text
    • http://files.sstaprek.com/uploads/1/3/2/6/132695576/07073fb389.pdfIn PDF document text
    • http://files.secondhomeba.com/uploads/1/3/1/6/131606619/cfc65d2fff3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/91887342088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/explorations_conducting_empirical_research_in_canadian_political_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/pinibuzikaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93867881616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/assam_tet_previous_question_paper_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/gleitman_psychology_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/54773675974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8829/5576/files/12663923183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5921/4501/files/vebenolamukikil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/63488144035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/minecraft_nuke_mod_1._12._2.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 2

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_off00007e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 5100 bytes
SHA-256: ea4767ff02b3f66434c64544476025a2365d87d9a7ebb49c4e0bfb4fad6d4563
font_01_sfnt_off00008f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F63 9964 bytes
SHA-256: 52fe339930776296094a4981ce06ac168025c7f90ac519448a0653314b696374
font_02_sfnt_off0000b170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB170 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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