MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate downloads. The primary redirector URL, https://ttraff.cc/pify?keyword=free+chinese+children%2527s+books+pdf, is flagged as malicious, indicating a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.
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=free+chinese+children%2527s+books+pdf In PDF document text
- http://files.spamitzvah.com/uploads/1/3/1/3/131384789/2268709.pdfIn PDF document text
- http://files.tigerindustriesinc.com/uploads/1/3/1/3/131379991/5910297.pdfIn PDF document text
- http://files.shoptiga.com/uploads/1/3/1/4/131438468/5424454.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/1/0428/3842/5767/files/92486208575.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6604/8165/files/99894910275.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdfIn PDF document text
- https://sobetolav.files.wordpress.com/2020/06/19629798821.pdfIn PDF document text
- https://worilivino.files.wordpress.com/2020/07/3476823530.pdfIn PDF document text
- https://tazesetinud.files.wordpress.com/2020/07/29585848583.pdfIn PDF document text
- https://limapifog.files.wordpress.com/2020/07/76688498975.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6026/5117/files/valevubemojobaparun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3110/9538/files/33109642706.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9648/9632/files/75173077708.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7445/2632/files/zemawo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9228/6363/files/mapofa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2900/3416/files/kodofegajefovujerose.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8268/6367/files/71191671252.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007bd2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BD2 | 18068 bytes |
SHA-256: d8755a2c408148c82a128e20696689539af267fbb32c868e6960205a38b0f4ac |
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font_01_sfnt_off0000b514.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB514 | 4936 bytes |
SHA-256: 64531fbdccde3bf60a367959e037a7cb8658781fb529fc4f369f2f2ea6a9a6a9 |
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font_02_sfnt_off0000c5c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5C0 | 11056 bytes |
SHA-256: 1654bc0cda1159253134b03a36dddb20eac1462709afa1220871038ad901d162 |
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font_03_sfnt_off0000eb32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB32 | 2752 bytes |
SHA-256: 11bf571f0af05367446b2020c2f1c6267491649bc48117454eca19867f219dc9 |
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