Malicious PDF — malware analysis report

Static analysis result for SHA-256 7889b93255634614…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 15:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e69823222c0b0a3fdaf910c128d71cd7 SHA-1: 131dc19f028dfe2aaf38d8450607770b9a3934ec SHA-256: 7889b93255634614656f5b75f4b3af538041246ab65447f55aa32fa50fbaa440
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with keywords like 'tamil news paper apps for android'. The ML classifier strongly indicates maliciousness, and the presence of numerous external links suggests a link farm or SEO manipulation tactic to distribute malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.com/pify?keyword=tamil+news+paper+apps+for+android In PDF document text
    • http://rodow.haleymclaughlin.com/uploads/1/3/0/7/130776457/2964233.pdfIn PDF document text
    • http://sekonozad.gretchendriscoll.com/uploads/1/3/1/0/131070874/6979000.pdfIn PDF document text
    • http://files.bikerstoreuk.com/uploads/1/3/1/8/131857199/lofedowopelej_nitavurodo_fejido.pdfIn PDF document text
    • http://files.cdany.info/uploads/1/3/1/3/131378779/13436e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/37749094534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3758/8646/files/vevarugoderepujukilifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/canadian_immigration_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/define_linguistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/preparation_of_ferrous_ammonium_sulphate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/cable_tv_channel_package_price_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/26284948231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1818/9980/files/bitinekikirijunijanitazew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/candy_armor_rotmg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/canon_eos_rebel_t6_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/ccrn_practice_questions_with_rationale.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F8 4936 bytes
SHA-256: bfd5c9f9abbfa98e070d0c4c8fa66425ab7fdcc4909bd95cadd360b1ca208227
font_01_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 14132 bytes
SHA-256: 8c8763bad9a77b2751f55981ade250ffa077d1a2bdd9a2cfc13d12332645e0af
font_02_sfnt_off00008f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F11 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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