MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, contains text suggesting a lure for a technical book download, which is a common tactic for phishing or distributing further malware. The presence of many external links, including one to a known malicious redirector, indicates a link farm or SEO poisoning attempt to drive traffic to malicious sites.
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://gettraff.ru/strik?keyword=data+structures+and+algorithms+in+c+4th+edition In PDF document text
- https://xezefamije.weebly.com/uploads/1/3/4/3/134352880/mumefajomunu.pdfIn PDF document text
- https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/migusutosuwu.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/1/0431/2658/7549/files/super_bowl_2020_betting_sheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0499/1387/files/vinizipe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0505/3887/3014/files/user_manual_introduction_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0896/6307/files/11032634889.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/7757/3025/files/nejinasunesuworizib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6341/9815/files/matewamezijorejisudofuve.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/7295/3761/files/cse_373_spring_2019.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/1688/6678/files/torah_hebraico_portugues.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/6343/8243/files/multiplying_polynomials_worksheet_algebra_2_doc.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0458/3318/files/when_the_stimulus_intensity_increases_what_changes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/0509/5331/files/zuponorudukari.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1144/8729/files/yarichin_b_club_yui.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/blue_lines_appearing_on.pdfIn PDF document text
- https://s3.amazonaws.com/vonuxagupeduze/full_body_dumbbell_workout_routine_at_home.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/gelirik.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/bioresources_of_assam.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/9632625501.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/mathematics_for_economists_carl_p._simon_lawrence_e._blume.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_off0000655f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x655F | 5440 bytes |
SHA-256: 061efa81509bdf5fbd3a02fa6bce34a3cc30f6e3b4cd54e78859136468cbc5ba |
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font_01_sfnt_off000077ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x77BA | 11556 bytes |
SHA-256: 57d80848cded6faa9b39c4eec7563ada228d51f6d8b8ef863b35cf6b383be355 |
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