MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF is classified as malicious due to its use of a redirector link, specifically 'https://ttraff.cc/pify?keyword=algorithmen+und+datenstrukturen+pdf+download', which is designed to lure users into downloading further malicious content. The document body and embedded links suggest a phishing attempt disguised as a free download for technical documents. The presence of numerous external PDF links further indicates a link farm for SEO manipulation, likely to increase the visibility of the malicious redirector.
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=algorithmen+und+datenstrukturen+pdf+download In PDF document text
- http://gedak.sayrevillesquad.org/uploads/1/3/1/6/131636725/1116774.pdfIn PDF document text
- http://navoz.bigislandeventrentals.com/uploads/1/3/0/9/130969352/3257511.pdfIn PDF document text
- http://wuzis.michael-corey.com/uploads/1/3/1/4/131407089/b56a06908e2e0.pdfIn PDF document text
- http://files.ecolodge-laketiticaca.com/uploads/1/3/0/8/130814254/vovajas_nusefisut_tobenelaladute_dikudozubenigag.pdfIn PDF document text
- http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.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/1/0434/1530/6405/files/31147742620.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1910/7480/files/labupijijub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9725/8136/files/sevozuvubukatuzi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9350/8771/files/reparacion_y_bobinados_de_motores_electricos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7478/9281/files/conducting_a_performance_appraisal_interview.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0360/0286/files/98154192355.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0638/5576/files/kukefuxavomixeveluwusexi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1740/4573/files/60783441145.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8457/1031/files/81016151356.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4678/0566/files/munanejomopukebutezu.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_off00008fbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8FBF | 5600 bytes |
SHA-256: 97e857e707d3ee3f0b35bde785ee6a681f06cf40ad04e45f34ef02a26ff616c0 |
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font_01_sfnt_off0000a2b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA2B7 | 11280 bytes |
SHA-256: 3346dfd012d0d62dde85cc496daaa92b3b6c04b71545247674716777fdf6ecfe |
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