Malicious PDF — malware analysis report

Static analysis result for SHA-256 996bfbe98a74919e…

MALICIOUS

PDF

48.7 KB Created: 2020-08-08 08:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cdd0ca5140dba0e3dc071a94e3c6684 SHA-1: 3e3a43446a83cd38c28ea26e58bf396937ed10b6 SHA-256: 996bfbe98a74919e574452163fef9e7b1bf75acbc9a2487af9c9b8e7a0e2afd6
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=asset+allocation+balancing+financial+risk+gibson+pdf', is identified as a known malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious content, likely for further exploitation or phishing.

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=asset+allocation+balancing+financial+risk+gibson+pdf In PDF document text
    • http://files.carringtonandfinch.com/uploads/1/3/1/3/131381612/102652f00.pdfIn PDF document text
    • http://files.thomsondentallaboratory.com/uploads/1/3/1/3/131382406/samul.pdfIn PDF document text
    • http://files.blubocker.com/uploads/1/3/2/6/132681296/sobofaposilumewa.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/1/0428/4701/0972/files/difference_entre_accident_et_incident.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/morunajuvasanozinewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6896/files/bangla_kobita_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/86673634777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/63337761948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/tuff_stuff_home_gyms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/4681/6155/files/enadu_news_paper_today_ap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/tabonitunegaseferifeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/minecraft_gamerule_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7059/3955/files/39397580727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/rawez.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_off00007f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F00 5516 bytes
SHA-256: 0383e9b2bda0e2c56c5c6323a2f2f79788020dbd17ac7f5a282492f5329c967c
font_01_sfnt_off000091d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D1 10384 bytes
SHA-256: b347321aa36cb88b5d2454e057d9c76ba73aa943007d8ab6cfc64901fd818f31

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