MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic firing indicates a direct link to a known malicious redirector at `https://ttraff.com/pify?keyword=bsc+1st+year+chemistry+notes+pdf+2018`. The document body, though heavily obfuscated, contains this same URL and references academic notes, indicating a lure to trick users into clicking the malicious link.
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.com/pify?keyword=bsc+1st+year+chemistry+notes+pdf+2018 In PDF document text
- http://files.ashleymossphoto.com/uploads/1/3/0/7/130739287/1982562.pdfIn PDF document text
- http://midogu.martineaxelrod.com/uploads/1/3/1/0/131070627/bipexasis-gakujebofa-nuxetepa.pdfIn PDF document text
- http://files.twofriendsmetalsculpture.com/uploads/1/3/1/8/131871902/a5f3d3457.pdfIn PDF document text
- http://files.doverchoirs.com/uploads/1/3/1/1/131163712/2728441.pdfIn PDF document text
- http://files.sondikakoaukera.com/uploads/1/3/1/3/131381722/vapevulutawoxurowog.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5338/3833/files/algebra_maths_genie_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2251/4338/files/movies_to_apple_tv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4904/1563/files/21300230342.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/77134535914.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3046/3142/files/debezasagokomaresamefa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2464/5272/files/introduction_to_mechanics_of_composite_materials.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3055/2474/files/possessivpronomen_bungen_englisch.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3350/9534/files/48958757949.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7871/2472/files/masitelixewox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3123/1637/files/tojef.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F21 | 6036 bytes |
SHA-256: 460bf301ca08f1ec225c05705909532fc84befc45c6e22a30cc4d57ef2dbb24f |
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font_01_sfnt_off00008388.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8388 | 3204 bytes |
SHA-256: a0f5a8dfeaa0bb6dc0effbaf73f2996d6fa971a09dbb121d521afc971fdcd47e |
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font_02_sfnt_off0000907b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x907B | 2576 bytes |
SHA-256: 1a59eb1ea88b22b74202798a49f8212710a90503901ea3bb1d8f3e91139f8075 |
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font_03_sfnt_off00009b70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9B70 | 10252 bytes |
SHA-256: 8ae57fb8b5246bee93b23b9fd584784a886b52dbb7b3584717695da98bac7c8b |
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font_04_sfnt_off0000be82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE82 | 16224 bytes |
SHA-256: a349519ccbdbca3d75704c2becf615ab37801eb1543272228454131dceb83acc |
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