MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a link to a known malicious redirector, ttraff.me, which is likely used to distribute malware or lead users to phishing pages. The PDF also contains a large number of embedded links, many pointing to static.usrfiles.com, which is flagged as a link farm. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector and link farm suggests a delivery mechanism for further malicious content.
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.me/wix?keyword=template+design+for+newsletter In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/704566_a397645603694e9a8393f71e8e60c8c3.pdfIn PDF document text
- https://static.usrfiles.com/ugd/2eedf1_74244876c4ce4b95beee357e69095133.pdfIn PDF document text
- https://static.usrfiles.com/ugd/fdee49_7c6eb035607b4befb960214ca0876b9c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/963627_68f81c11e5794ab59eb88b3a92d746bf.pdfIn PDF document text
- https://static.usrfiles.com/ugd/6f53d7_ce76d20864834155a63c260d95e14ccc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4d935e_19f23f3059774170945d1aed65f9a0df.pdfIn PDF document text
- https://static.usrfiles.com/ugd/74a852_6d6861cc47774eecb29615dfc2aa6c57.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ab059d_125d206fc87d4565b59bddcabbec737f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/575fb0_a2e8f2bd02a541cbb23960387d51068a.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6573/5328/files/angry_birds_sms_sound.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3799/0813/files/bakabapavapowir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4093/9933/files/31654257581.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7750/0057/files/cytonn_hospitality_report_2018.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b7082a_a34466e57c8143d1906ad35a42b227b6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3225da_d5a04f93ad944136a73ee59d837033e1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/7ab50f_e4d4a24b8ba348fc812036bfd24035c4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b7ed05_557bce2238824d82be0c93ec8b316423.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007b85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B85 | 5404 bytes |
SHA-256: 4b0fd5f37d424693e36ec97ffc8d46069c1f47e06ceda209625a7b305726623c |
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font_01_sfnt_off00008dd5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DD5 | 2268 bytes |
SHA-256: 87560c96094722e0b06e960fc6e6e0982e5dd9a45b3b8c8ce6a725bc3f373f32 |
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font_02_sfnt_off000097e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x97E7 | 15964 bytes |
SHA-256: e1e7ea17a4e8c3ec94daa4d6c065b03fe7f7ad11769621278bb0c53570f6be54 |
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