Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1332744de8dc816…

MALICIOUS

PDF

52.4 KB Created: 2020-08-03 15:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a93d9521feec84382d1011d8bf8b5935 SHA-1: 0a5e2a7a21223d3dfe73d9cb3316ba0e76fa34bd SHA-256: d1332744de8dc81607c48e96ad079b8eb172df759d0988d143595a016ce605b3
254 Risk Score

Malware Insights

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

The PDF contains embedded links designed to lure users into downloading more content, specifically promising free CCNA security dumps. One of the primary links redirects to a known malicious domain (ttraff.com), indicating a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains the lure text and the malicious URL. The PDF also exhibits characteristics of a link farm, likely for SEO poisoning to increase visibility of the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ccna+security+dumps+pdf+free+download In PDF document text
    • http://files.guildhallvt.org/uploads/1/3/1/4/131453850/53813c8.pdfIn PDF document text
    • http://files.studiosquid.com.au/uploads/1/3/2/6/132695387/mevezeru_noladobono.pdfIn PDF document text
    • http://files.oileranimation.com/uploads/1/3/1/4/131407709/852292.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/1/0432/3511/5175/files/xisivez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/katalenagosibujeligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0818/8839/files/zeludazarugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/81247727294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/xudulitegifavofitenesof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/97570801406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/davegarovifako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/39098650631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/best_trucker_gps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/suropiren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/jewosowebami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/snow_white_and_the_seven_dwarfs_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/13892909049.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D39 5400 bytes
SHA-256: 2242aa373fe1e52a3b78ef4f8f3232c94d577caa22ce21d69407843497a6703a
font_01_sfnt_off00009f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F96 10792 bytes
SHA-256: 297525b25940b3087fe5a8687ac9ee38574a5512ab982a1c8d54462a3a59de4e