Malicious PDF — malware analysis report

Static analysis result for SHA-256 834984d5049fb7fa…

MALICIOUS

PDF

54.6 KB Created: 2020-08-12 20:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f24351619487519772cc86332d26495a SHA-1: 77bb6bd623f812de12ad7021cf0768a93c67a0ea SHA-256: 834984d5049fb7faab46cd9345edea68e773fc7dcc6498b98f115898c16d6f6c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.com), disguised as a free download for a mathematics PDF. This suggests a phishing or SEO spam campaign aimed at driving traffic to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful 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.com/pify?keyword=algebraic+structures+in+discrete+mathematics+pdf In PDF document text
    • http://files.zuzubeanpress.com/uploads/1/3/0/7/130776786/9d2bf.pdfIn PDF document text
    • http://files.eyretonponyclub.com/uploads/1/3/0/9/130969153/7674e0e5b687.pdfIn PDF document text
    • http://files.lemeadowspantry.com/uploads/1/3/1/3/131379290/6305158.pdfIn PDF document text
    • http://tojonen.aierossmann.com/uploads/1/3/1/0/131070476/1885330.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/1/0431/1390/6327/files/11681741483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/nikozinijug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52876055892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/70432392137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/86335428633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/89480648355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/47418702597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3661/3544/files/62147363518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/teraka.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00007492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7492 5700 bytes
SHA-256: 61d13037d824cccdfb8e59f5354fa10978396d58423d16b0829ab709dff5e48f
font_01_sfnt_off000087c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C1 14904 bytes
SHA-256: e5775026017dcb669c7af6c062684c4323765c3d19aefa67ee2dbc0e65401184
font_02_sfnt_off0000b5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5A5 16096 bytes
SHA-256: fd25210be9eb1f9757a25d943f28e7fcf096fe665e9084197a2ee29d13022539

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