Malicious PDF — malware analysis report

Static analysis result for SHA-256 396386c3ccb7b903…

MALICIOUS

PDF

49.2 KB Created: 2020-08-06 15:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee8619cade55069f13c02dc62a896d9e SHA-1: 73153a4cf9cfc3f8b38041d9048a2a90a854a7b9 SHA-256: 396386c3ccb7b9033bf79d792fbba9536123812cb1209081d02fca98b95b1e73
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a link to a known malicious redirector at 'ttraff.com'. Another critical heuristic indicates a link farm, with many PDFs hosted on Shopify domains. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be luring users to click on the malicious redirector URL, which likely leads to a phishing page or malware download.

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/pify?keyword=oxigenoterapia+pdf+anestesiologia In PDF document text
    • http://files.elderresourcesofri.com/uploads/1/3/0/9/130969761/766547.pdfIn PDF document text
    • http://files.mistybluesbunnies.com/uploads/1/3/1/3/131397964/sozuvaxobowa-gotozukula-xisitorusanawa.pdfIn PDF document text
    • http://fedisogo.my-pristinedental.com/uploads/1/3/2/8/132816066/9431682.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/1/0433/5278/5055/files/girazexogavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/68636606622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/bazunikonezexamalufir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/macbook_github_boot_to_a_usb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/88495124679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83142526711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/63396588194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/vifefotuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/12713182295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/29763718850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2165/5464/files/algebra_maths_book.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 3

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_off00007563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7563 5092 bytes
SHA-256: 7d8891fb07a3b482c48ba30b977125d252e743b951b371ada7f88ca714208e27
font_01_sfnt_off000086c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C3 10216 bytes
SHA-256: f8ce9e49489fcc95a1d1329e2cdf30c2d06a652477dac4cecc65f6110948a874
font_02_sfnt_off0000a9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B3 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.