Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3b956cf08dd1de…

MALICIOUS

PDF

46.6 KB Created: 2020-08-16 00:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5f848464772e0a2a59f3b7dab6df3eb SHA-1: af70364ab417c577e960125cfe07bcfb39585fd0 SHA-256: 5a3b956cf08dd1de1cd9c7dd32bdb4e6fd8c46b0e95155cdd797a43399567410
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body and heuristics suggest a lure for users to download a PDF, which instead leads to the malicious URL https://ttraff.com/wb?keyword=quran%20roman%20english%20pdf. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=quran%20roman%20english%20pdf In PDF document text
    • http://files.susan-mcmahan.com/uploads/1/3/0/7/130776745/4207876.pdfIn PDF document text
    • http://files.pcrconference.org/uploads/1/3/0/7/130775427/9983050.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/1/0433/8545/4757/files/10141482545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/wijuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/gimosonetapisoger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/maths_textbook_grade_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20931566490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/happy_anniversary_song_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/warajawotabitelal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/authorization_for_medical_records_release_form.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_off00006a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 5320 bytes
SHA-256: 604bf8b0b58140c812f4f6fe140945dd173344c7ddfc1373ea55d535552b1855
font_01_sfnt_off00007c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C39 11368 bytes
SHA-256: 18a1bc472fcb740b7b1e5e0b5fe24b307bd77bddd5281f947e3ec7d93da580de
font_02_sfnt_off00009fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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