Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4192bf1c4c46524…

MALICIOUS

PDF

52.0 KB Created: 2020-08-20 13:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 486f34caf8955549d5f76dc76c2167b4 SHA-1: 0a24ecd0bd013c8aaf91efc551ee5b59d37716ee SHA-256: e4192bf1c4c465249ec550ac119354e6ce372319e61ebd7ec7f0cb6405ebab21
194 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as 'client facing skills interview questions and answers'. This link, 'https://ttraff.cc/pify?keyword=client+facing+skills+interview+questions+and+answers', leads to a link farm of 15 other PDF documents hosted on Shopify. The primary purpose appears to be to drive traffic to this link farm, potentially for SEO manipulation or to host further malicious content.

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/pify?keyword=client+facing+skills+interview+questions+and+answers In PDF document text
    • http://files.andyfowlie.com/uploads/1/3/1/4/131410662/6104328.pdfIn PDF document text
    • http://files.bigtrecreation.com/uploads/1/3/1/3/131379612/fasezojozixuf.pdfIn PDF document text
    • http://files.kvwilsonauthor.ca/uploads/1/3/1/4/131437864/sopenivoduma_mogaxudijixi_xomumabekemeboj.pdfIn PDF document text
    • http://gidamud.monicamillerdesign.com/uploads/1/3/0/7/130740072/1431015d1ab2e.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/1/0431/7341/3032/files/manufacturing_business_plan_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/merirosanivovowabevelav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0559/files/56754804062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/alan_walker_ignite_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/tupivupisupelaboneso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/chakravyuha_audio_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/wudikogowirub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/52303745465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/tedezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/51206752247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/18456925935.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 5436 bytes
SHA-256: 9afd9536b7106703eefcc20525cf92c68e5207f59b1f8f89cd7846035f5e7fa1
font_01_sfnt_off000090f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F5 10352 bytes
SHA-256: 7ea05e53700b5aa4a9f55b0912a3b72d1e62ad64c511e9ed6a92943149670526
font_02_sfnt_off0000b462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB462 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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