MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=electronic+devices+mcq+with+answers+pdf`. Another heuristic identified a mass external PDF link farm, with many links hosted on `cdn.shopify.com`. The document body, though heavily obfuscated, contains text related to "electronic devices mcq with answers pdf", suggesting a lure to attract users to download or view content, which then redirects them to malicious sites.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=electronic+devices+mcq+with+answers+pdf In PDF document text
- http://files.therubythroat.com/uploads/1/3/2/8/132815004/fibanapobuvidufi.pdfIn PDF document text
- http://files.jsphotographycapturingthemoment.com/uploads/1/3/0/7/130739621/wulifavufagonapi.pdfIn PDF document text
- http://files.ncrehabassociation.org/uploads/1/3/0/7/130739789/3030cf.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/1/0433/8316/0995/files/rinilivodazetuxufategaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0767/9397/files/62727449448.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3503/3757/files/mamoxorokinifusotoxus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6350/9141/files/75567085880.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2809/4882/files/53155225316.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2981/5705/files/60096702792.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5598/8387/files/febupiwimukojolur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2563/6248/files/xipom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5802/1027/files/fabubetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0569/7438/files/kofom.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_off000068ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68EC | 5416 bytes |
SHA-256: 67e0149463cbb2909e3f77c1ab4817ae882cd64d122b5ede36e8e0d8e17a45f7 |
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font_01_sfnt_off00007b3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B3A | 10500 bytes |
SHA-256: b22cdd556b7b38159f6538438332a4840cee7d680d486cb6585318b38be71fe9 |
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