Malicious PDF — malware analysis report

Static analysis result for SHA-256 103a68779f9ac951…

MALICIOUS

PDF

40.5 KB Created: 2020-08-28 12:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01567f832b8e6b30b05de630c0187893 SHA-1: c4f140bc2163717a5027e785aad4a5cf52de3ee5 SHA-256: 103a68779f9ac9511da281e492bb1fbbaadbd51eee7b56552301488ccabafaf7
194 Risk Score

Malware Insights

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

This PDF document contains a link farm and a redirector URL, masquerading as a worksheet answer key. The primary malicious URL identified is https://ttraff.ru/pify?keyword=electronegativity+and+bonding+worksheet+answers, which is likely used to deliver a secondary payload or redirect to a phishing page. The document's structure and embedded links suggest a phishing or scam 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.ru/pify?keyword=electronegativity+and+bonding+worksheet+answers In PDF document text
    • http://files.susankong.com/uploads/1/3/0/8/130814085/2919dea06da6.pdfIn PDF document text
    • http://files.am-ttc.ch/uploads/1/3/1/8/131857270/lalolulamisisesezo.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/1/0437/4131/5223/files/benazigevebugogud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/libabegatada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2195/4206/files/conceito_de_associativismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/98160848545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4831/2736/files/xugikufejamamizaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/60418653162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7737/7688/files/gurps_core_rulebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6844/0224/files/dawivajakeguzujixuxegawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/agricultural_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/counseling_the_culturally_diverse_6th_edition.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_off00005e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E63 5616 bytes
SHA-256: 9f8b5069289f8787b8337020381b7ea4ca6680e8c63b68d5a322c58111dd6d6b
font_01_sfnt_off00007187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7187 10436 bytes
SHA-256: 7d810615fac9b0f6c0008b8c75e3992e741e7a990f4f692669a8f0f31a0534f5

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