MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing lure. The document body and heuristics explicitly mention a lure for a 'solid principles c book pdf' and a 'free-download phishing' attempt. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to solicit sensitive recovery information, likely after the user is redirected to a malicious site. The presence of embedded URLs and the nature of the heuristics suggest a phishing attack designed to harvest credentials or sensitive data.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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.com/pify?keyword=solid+principles+c+book+pdf In PDF document text
- http://jakalon.joelovesyou.de/uploads/1/3/0/8/130874493/viriro.pdfIn PDF document text
- http://riwofesi.toxique.org/uploads/1/3/0/8/130814017/1750014.pdfIn PDF document text
- http://files.imitolab.org/uploads/1/3/0/9/130969960/sepotewuxuwub_pizis.pdfIn PDF document text
- http://ralisajuv.beingwellagingwell.com/uploads/1/3/0/8/130813528/kotototojegapofanaku.pdfIn PDF document text
- http://files.stjohn23rdministryofpresence.org/uploads/1/3/0/7/130739202/tufawidorekul.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/1/0428/8036/8796/files/kutanukalexo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6779/3817/files/18679695660.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0413/3525/files/black_magic_speed_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5425/1670/files/58507258082.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9297/4499/files/osha_illumination_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4843/5861/files/31362232367.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8790/4411/files/20174420699.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/74409567496.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6341/8784/files/4261437521.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99594865370.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6489/2323/files/convert_to_word_free_download_windows_10.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_off00007904.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7904 | 5244 bytes |
SHA-256: aa5bc65c3f344ae1ecd57f65b964562fe8a3948cbb43819b729127ee407178fb |
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font_01_sfnt_off00008ae4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AE4 | 10852 bytes |
SHA-256: 27c5484ae32b4f68b153d805e338241dbe818fda7343ec2815630590f00bb4f0 |
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