Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d13017b5cbdb21…

MALICIOUS

PDF

40.7 KB Created: 2020-08-04 14:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d5f3e9f66c3c98aa56a9f5e328df67d SHA-1: 1ef1844212d77c96552aa0dfd65dd905f5396cac SHA-256: 79d13017b5cbdb21a87646d9af802dc27ae569a9e99bf97bdf65495a385d740d
194 Risk Score

Malware Insights

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

This PDF document contains multiple links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=periodic+table+with+atomic+number+pdf+download, which is flagged as malicious. The document body itself is heavily obfuscated but contains references to the redirector and other PDF files, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. No scripts were extracted, but the presence of malicious redirectors and the ML classifier output strongly indicate a phishing or malware distribution attempt.

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=periodic+table+with+atomic+number+pdf+download In PDF document text
    • http://files.angelamarquezdesign.com/uploads/1/3/0/8/130814124/vetilodejezofobo.pdfIn PDF document text
    • http://files.jasminemcmorran.com/uploads/1/3/1/8/131856173/radurukip.pdfIn PDF document text
    • http://files.blossomvalleysingers.org/uploads/1/3/1/6/131636654/2166902.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/1/0434/4096/3750/files/mibina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/xetisuvezax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/libro_el_bogotazo_memorias_del_olvido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3277/5589/files/how_to_disable_hyperthreading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7474/7545/files/82561919398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0089/7440/files/gonobegusururafapevel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/19072810261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/dolor_abdominal_agudo_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/catalytic_cracking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/51951197238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/brazilian_girl_names.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 4

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_off00006155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 5448 bytes
SHA-256: 76a350f81ce91a9fbcefd85cc02c9ed5effb10b993f13df742f663261ccc41df
font_01_sfnt_off000073bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 9896 bytes
SHA-256: a4fd6219e6fac80c2f829cf2533d0505adb4a9ab1811ff16249105169ccca222

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