Malicious PDF — malware analysis report

Static analysis result for SHA-256 5506e0f3d4d7c2b7…

MALICIOUS

PDF

50.4 KB Created: 2020-08-12 03:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6033ea9481faa7956c6eb12c285314d8 SHA-1: 123e08dedc05c0a65fd0161fa143ae0bae563928 SHA-256: 5506e0f3d4d7c2b7e69264efb65c02d951395773256f100565f6f8f67f3263ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=oracle%20rac%20interview%20questions%20pdf'. This URL is embedded within the document's text, disguised as interview questions. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious link is the most critical IOC.

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.cc/wb?keyword=oracle%20rac%20interview%20questions%20pdf In PDF document text
    • http://files.eesalon.com/uploads/1/3/1/0/131070247/6194954.pdfIn PDF document text
    • http://doxogole.nwbars.com/uploads/1/3/0/9/130969723/futegijitekited_demukosag.pdfIn PDF document text
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.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/1/0437/3915/2535/files/97696441962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/a_k_jain_physiology_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/37342287993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/kexul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/arithmetic_logic_unit_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9006/files/39044404859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/44334958672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/2017_honda_crv_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/kafasumotonedikoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/polaja.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_off0000855f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855F 5452 bytes
SHA-256: 8e443e199c51e7c731ef4a09063b962415ea35a00b2f3841052f222afd8cef26
font_01_sfnt_off00009809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9809 10760 bytes
SHA-256: 12ca4ac13fcf8338d03ab6824bd55d9a430c1bfa45129f4706a247646f3829a6

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