Malicious PDF — malware analysis report

Static analysis result for SHA-256 516eff50baa72e9b…

MALICIOUS

PDF

36.3 KB Created: 2020-09-18 16:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76153e278ff72c6b796359419319d1c8 SHA-1: 4f565d4874ef4ae2310e1b643dfaad35bbabf330 SHA-256: 516eff50baa72e9bbaacee2caa264c5f3e98342874ac51cc8de952bd415ae9e7
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. Specifically, it links to a redirector at 'ttraff.club' with a search query as a parameter, suggesting a phishing or SEO poisoning attack. The presence of a large number of external PDF links further indicates a link farm designed to manipulate search engine results or distribute malware. No scripts were extracted from this sample.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=delnor+community+hospital+phone+number In PDF document text
    • http://nafonor.olyhp.com/uploads/1/3/1/4/131452836/fejilulavutadiripomu.pdfIn PDF document text
    • http://pedexorow.14thstreetartistcommunity.com/uploads/1/3/2/6/132681337/260c2b.pdfIn PDF document text
    • http://panumu.shanyafeng.com/uploads/1/3/0/8/130874233/2636343.pdfIn PDF document text
    • http://files.scotlandflowersandmore.com/uploads/1/3/1/3/131379530/9759840.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fddf4dd6-088e-4c02-a875-ca81a92818d5.filesusr.com/ugd/04c368_bf95c0b4312c41738fd25e5e5b1aa661.pdf?index=trueIn PDF document text
    • https://38d6518e-fa58-4846-a212-e3e1b963eb15.filesusr.com/ugd/595093_bcac979856c54c978180652a31d4d0f7.pdf?index=trueIn PDF document text
    • https://edea426e-befb-434b-b1e9-43541780a535.filesusr.com/ugd/253000_e3e34761666a4b11a5edf710da6372e4.pdf?index=trueIn PDF document text
    • https://2c4bcbf2-ad82-4bbc-93a6-32aef8c247cc.filesusr.com/ugd/e2c223_b39c94cc034f4201b39e7fbaa898e000.pdf?index=trueIn PDF document text
    • https://c8d76262-2db6-4762-ad8c-8d171169d0e8.filesusr.com/ugd/c83fdb_200036d3370e46f89e59ea95f48fea4c.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/lezovadekag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8232/4637/files/43764301938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/tojowifoxavovuluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3938/3971/files/acca_f9_kaplan.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 1

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_off00004f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F61 5416 bytes
SHA-256: f151a90ae19ca7d315d9485961fa113524ada189eb0006e1b02d3b0ef203df1f
font_01_sfnt_off000061aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AA 10196 bytes
SHA-256: 8dceecb77b283b6546123163f4dff10f527ab5455a50089d11372743d451135e

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