Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e275813156c1e3…

MALICIOUS

PDF

45.2 KB Created: 2020-07-25 06:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5434e878f6e7cbe92c9bebd60ce56988 SHA-1: 2797102c9d70abee51f8e6225bc32f488331ebeb SHA-256: 62e275813156c1e31b09fdbc6fa7fd05ab7f4a67442bc2555b291ff87fbcf2d3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'census application'. The ML classifier strongly indicates maliciousness, and the embedded links are designed to lead users to potentially harmful content.

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=census+application+2019+pdf In PDF document text
    • http://files.alissaellisphd.com/uploads/1/3/1/4/131452827/844207.pdfIn PDF document text
    • http://files.kvbfrancedesign.com/uploads/1/3/0/7/130775730/3845915.pdfIn PDF document text
    • http://files.oddballcraftscreations.com/uploads/1/3/1/8/131856318/guxuleso.pdfIn PDF document text
    • http://files.clarepoppi.com/uploads/1/3/1/8/131871980/xuxeriz_zaverixanogizu_wewidi_pazagatomewog.pdfIn PDF document text
    • http://files.nwghsaa.com/uploads/1/3/1/4/131453990/8452381.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/1/0430/1042/4985/files/54088940866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/nonolivuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/zexerita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/33314930890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/2444707151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/fefuzewopuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/venov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3638/4149/files/7963927879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/5147732044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/82450084854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/wonebadivadoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/30656092449.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 8

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_off000071b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B5 5440 bytes
SHA-256: 8725cb99eacc868c9dc4a513560d1383ee8ff05253977e88f104e3d790521af9
font_01_sfnt_off0000844b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844B 10380 bytes
SHA-256: cad20d3dabacdc88838830f30e50c4410760366170bd5a5840acca91fc118faf

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