Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f02915a27be677…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 09:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd6764d1324311c345b0fa678fcebf4c SHA-1: fa5d7fbd285602786b0adc3a3973487bcd0fae6c SHA-256: 57f02915a27be6779d71cf0a24ea3e80836369b2468a446915aa6d5e9261af1a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a URL related to 'extended warranty form template'. This URL is designed to redirect users to malicious infrastructure. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to increase visibility. 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=extended+warranty+form+template In PDF document text
    • http://favagir.jlbinc.com/uploads/1/3/1/4/131453574/897433597ce8be.pdfIn PDF document text
    • http://files.chantelclucier.com/uploads/1/3/0/9/130969831/vibavelovorupu.pdfIn PDF document text
    • http://files.stpeterscatholicschool.com/uploads/1/3/2/6/132681293/pilatilumusan-fewipekewusatop-wotixa.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/1/0435/2465/3224/files/lunazuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/wivaduwaxidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6167/files/vixeluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/zedaximudape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7140/5222/files/certificato_medico_anamnestico_patente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/poferekorebizuvilokef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/tupekukejapotinozopomika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/sebojibijupele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/hypertension_treatment_guidelines_2018_jnc_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/44729255268.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
🗂 Part of campaign: jlbinc.com 3 samples

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_off00006ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED6 5228 bytes
SHA-256: ee161d00bede78d81cdb9031f2862f7691700ad9d457a44fa29dddcda0a97328
font_01_sfnt_off000080aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AA 10716 bytes
SHA-256: 17d795ee54c7cec5028149296d3d168848d533821ac5f82bf50f86aef4605b65

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