MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though malformed, contains a URL that appears to be the primary lure. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to obscure the malicious intent.
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=formulacion+quimica+inorganica+ejercicios+resueltos+pdf In PDF document text
- http://files.transformedbymercy.net/uploads/1/3/1/8/131856290/afcc75dfba5bb7.pdfIn PDF document text
- http://files.texascenterforregionalstudies.net/uploads/1/3/1/8/131856381/29afc.pdfIn PDF document text
- http://files.limitedrangearrangements.com/uploads/1/3/1/0/131071167/zowasej_fewafokokuni_maxijopap.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0427/9956/2911/files/pradhan_mantri_awas_yojana_list_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3096/0536/files/zuxexes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5592/3878/files/78011367385.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8787/9580/files/lajofemokobejusela.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8658/4733/files/99494734086.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3649/0398/files/16216854991.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2529/1674/files/wusumil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/7879196247.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1729/8329/files/luxidefawuxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3695/8104/files/wilunewaberipe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/2299/6888/files/kabobobozelakaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2186/8960/files/sosuwuxowewemerivulob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7507/5225/files/39146654825.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_off000051e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x51E7 | 5512 bytes |
SHA-256: 8bb05b4047d754213f43e6497ae3815b27a113c5f26aa1a4fc31320310ef9623 |
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font_01_sfnt_off00006480.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6480 | 1800 bytes |
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d |
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font_02_sfnt_off00006d0e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D0E | 10604 bytes |
SHA-256: b38b7c4a93f1fa55f8862a70d5c7c5e3b0782366e4394e50edcc11c968120608 |
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font_03_sfnt_off00008fb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8FB3 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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