Malicious PDF — malware analysis report

Static analysis result for SHA-256 158adc6472cbecc2…

MALICIOUS

PDF

39.0 KB Created: 2020-08-22 19:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83b82e6dde816e2e579cef9c2a43834b SHA-1: c7a389cafb67dceca8f3993974ef9eea576112f0 SHA-256: 158adc6472cbecc2586ad73b9bac554fd140a5c9f9bbd553988e66c97f8605a7
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, suggesting a phishing or scam attempt. The document body and heuristics indicate a lure related to 'Marathi recipes book app free', which redirects to 'https://ttraff.ru/pify?keyword=marathi+recipes+book+app+free'. This redirector is likely part of a link farm designed to distribute malware or lead to further phishing pages. The ML classifier also strongly indicated maliciousness.

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=marathi+recipes+book+app+free In PDF document text
    • http://files.youdesignleather.com/uploads/1/3/2/6/132682585/masebut_gawotumobavo_sivavule.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8783/6837/files/sipemutir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/78343533582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/87818506718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/67438534090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/temowoxejepoxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/pimebibugatujul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/xotunodatesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/jopuxededotiwude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8882/8829/files/pavlov_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/poferujiledef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/business_bookkeeping_spreadsheet_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x488D 5280 bytes
SHA-256: a1d79727086ef928187f24196d6895ce3d6b4b52b4be1e6670219a191dc1c360
font_01_sfnt_off00005a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7C 10216 bytes
SHA-256: bfede9bce61057b9120cc8bad365b87db7f8f13480211fe82746655763086049
font_02_sfnt_off00007dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC7 4700 bytes
SHA-256: d6eb8d0eb82d60ba7cb32601b5616b76b80d6ece11e689311be8a3c36c506894

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