MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to joining a Skype meeting, suggesting a social engineering lure. The presence of numerous external PDF links, many pointing to WordPress, indicates a link farm used for SEO poisoning or distributing malicious content. The ML classifier also strongly flagged this PDF as malicious.
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=join+meeting+skype+for+business+android In PDF document text
- http://files.fluxplay.co.uk/uploads/1/3/1/4/131438449/vufufekiwod.pdfIn PDF document text
- http://files.bettervoicescoach.com/uploads/1/3/1/3/131380083/junipodibas.pdfIn PDF document text
- http://files.sandriver.org/uploads/1/3/0/9/130969012/8577981.pdfIn PDF document text
- http://files.babygotbackbrace.com/uploads/1/3/0/7/130739239/13250.pdfIn PDF document text
- http://files.massageinnelson.com/uploads/1/3/0/8/130813988/1636862.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://pulanaradi.files.wordpress.com/2020/07/99225492675.pdfIn PDF document text
- https://tigirev.files.wordpress.com/2020/07/45430202124.pdfIn PDF document text
- https://pajifofa.files.wordpress.com/2020/07/gutefiwavuboxun.pdfIn PDF document text
- https://rodobab757524627.files.wordpress.com/2020/07/61686044442.pdfIn PDF document text
- https://mosijuf.files.wordpress.com/2020/06/98019959225.pdfIn PDF document text
- https://voluvatoru.files.wordpress.com/2020/06/86484532607.pdfIn PDF document text
- https://ramisiwew.files.wordpress.com/2020/06/71442828225.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3070/8375/files/fizomemogezududo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7543/6698/files/49229094902.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7952/4759/files/nojufaloxukarike.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0722/0644/files/wasegabiwojozobojegu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9328/7331/files/34048864207.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94393320092.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7121/8588/files/mofajiriluxine.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_off00005dc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DC1 | 5508 bytes |
SHA-256: 65d246a2e3ccd7098b28555bb93c16608be3431fc1e106a0141d90448763ca4a |
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font_01_sfnt_off00007064.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7064 | 9812 bytes |
SHA-256: 91bebc825badfacf707c7b2ec9c536d329cdb77e7b0c3372598ce30574446c5b |
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