Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a80d932591f7ac…

MALICIOUS

PDF

47.4 KB Created: 2020-08-07 04:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b33de0761674ce4371a4554a2e8a7e8a SHA-1: 3513a8ec5ca10db26da47d0956afdb8c7d97b35b SHA-256: 52a80d932591f7ac197ce7ee06096f4a66d557517c9eb66be4149e14641685fe
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a primary link to a known malicious redirector at `ttraff.com`. The document body text, though partially corrupted, suggests a lure related to 'dissertation on marketing pdf'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating the document's purpose is to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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/wb?keyword=dissertation%20on%20marketing%20pdf In PDF document text
    • http://files.cubandcuppy.com/uploads/1/3/2/6/132695829/a93690f1f9.pdfIn PDF document text
    • http://files.denjac.com/uploads/1/3/1/6/131606111/gusevejab-gebowiwat-gumuvamonadejof-vokub.pdfIn PDF document text
    • http://files.southwindkennels.com/uploads/1/3/0/7/130775084/vilen.pdfIn PDF document text
    • http://files.quillenphysiciansehr.com/uploads/1/3/1/0/131070604/gunatusixefasun.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/1/0431/7567/4024/files/38410449652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/vukepidiruwamopowixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/99158061035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/63077474675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/witekuzolevowujavozaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5712/6295/files/pesimemewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/tosare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1046/4667/files/91291532895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/17928322900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/radiestesia_clasica_y_cabalistica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/43923676082.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 5392 bytes
SHA-256: 4f4c54742bd16dea9e5d81be120ae3dd1a6012323f8e85f6fec81227342a9233
font_01_sfnt_off00008e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E53 10076 bytes
SHA-256: 22587f1a32a697c5faefa92ff7d665237c6acff2f9e42b7f4e5ebea7cedde5a7

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