Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfb131b8a06ca1e…

MALICIOUS

PDF

70.4 KB Created: 2020-07-27 01:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2afba7ca410cdf047299c0977bd623f SHA-1: a047cdffe957f28f33dedcc28f3d1d3860060d6f SHA-256: 7bfb131b8a06ca1e97811c2e25bfb6f15bea30518e30adb36ed33f7ca7b4683b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded links, many pointing to a redirector service (ttraff.com), indicating a link farm and SEO abuse for malicious purposes. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware delivery.

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=amnesia+memories+ost In PDF document text
    • http://files.stmatthewsworcester.org/uploads/1/3/0/7/130738755/365348.pdfIn PDF document text
    • http://files.nycmetrostars.com/uploads/1/3/0/7/130776073/4bd8c.pdfIn PDF document text
    • http://files.curvycreoleroux.com/uploads/1/3/1/4/131407067/wulam.pdfIn PDF document text
    • http://files.whimsicalsragdoll.com/uploads/1/3/0/8/130814680/1e079.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/1/0436/3078/8758/files/23422066838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/fazisorudenaposib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/levususebok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3307/files/6481338984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/66492837338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/xadunaxugogiramek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/19932723025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/96425256357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/lawetikojiwefipisezekivu.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 7

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_off0000c357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC357 6080 bytes
SHA-256: 48b7abb445dc131d430bf0de4ac3064d544bfb4332a1133d49c79460cd10bd50
font_01_sfnt_off0000d823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD823 4576 bytes
SHA-256: 337e5d4d9307de371eafab9cc759cfd1c5ea86d33116dd8369998424e9227bbb
font_02_sfnt_off0000e77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77B 10140 bytes
SHA-256: aeb2dc8a30e8898619181531c7e11faa916b2d3095dfa54ba095cded8af17ebf

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