MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external resources, a common tactic for SEO poisoning or link farming. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=buchungss%25C3%25A4tze+%25C3%25BCbungsaufgaben+mit+l%25C3%25B6sungen+pdf', suggesting this PDF is part of a campaign to distribute malware or conduct phishing. The document body, though partially corrupted, contains text related to 'Buchungssätze Übungsaufgaben mit Lösungen pdf', indicating a lure to disguise the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.cc/pify?keyword=buchungss%25C3%25A4tze+%25C3%25BCbungsaufgaben+mit+l%25C3%25B6sungen+pdf In PDF document text
- http://rixiruvas.habihabi.ca/uploads/1/3/1/0/131071157/5d0e93103.pdfIn PDF document text
- http://files.b2w2.org/uploads/1/3/0/7/130776493/4491969.pdfIn PDF document text
- http://koves.relativeautonomy.com/uploads/1/3/0/7/130775350/3661193.pdfIn PDF document text
- http://dukun.gabrielletrinca.com/uploads/1/3/0/7/130775403/6046b196.pdfIn PDF document text
- http://files.dbassettroofing.com/uploads/1/3/2/6/132682990/seloful-jujevimovukivig-biwokosunar-litujevudogubo.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/1/0428/9835/8432/files/sovir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6112/5013/files/tuvuxiditadirefuw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2156/4066/files/jojokibo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3015/1330/files/toveve.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0707/4723/files/atsg_automatic_transmission_repair_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4718/2759/files/53452348292.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3943/9510/files/35540914088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6107/4333/files/supplementary_budget.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4003/8302/files/63467250103.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3081/4626/files/bcom_hons_books_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7719/7221/files/76566153074.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D18 | 6204 bytes |
SHA-256: 27ec8912e191101554af041b43fbc957a0d1269154d91bfb2661e87a727bd6b7 |
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font_01_sfnt_off00007106.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7106 | 11184 bytes |
SHA-256: a6c5d8a98b4b28bfaf4b2ceb0947aeedbe17b8cf163fca7b675b881ef26c26ae |
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