MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Acrobat reader pdf writer free download' and a URL that appears to be a lure. This indicates a social engineering attempt to trick users into downloading potentially malicious files disguised as legitimate software.
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.ru/pify?keyword=acrobat+reader+pdf+writer+free+download In PDF document text
- http://files.hrstruehope.org/uploads/1/3/0/7/130739601/dipipebitoxu.pdfIn PDF document text
- http://files.resources.norledgemaths.com/uploads/1/3/2/7/132712483/zosoxabosalunok.pdfIn PDF document text
- http://sataxaw.ancientwavestudios.com/uploads/1/3/1/0/131070109/rifulawelegok-xagixaj-rabis-nanazu.pdfIn PDF document text
- http://files.commonwealth-cleaners.com/uploads/1/3/2/3/132303245/vuzisube_renojo.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/1/0428/7204/5734/files/mr_brightside_uke_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4235/6904/files/81980300006.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5455/4533/files/sujutujenekisineral.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3764/6245/files/64694342935.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1522/4996/files/rakoje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1659/3312/files/21325980094.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9421/1750/files/fafubolujogamoxuweka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9679/2471/files/25461837696.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1848/4888/files/vowels_and_consonants_list.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulexukiwogefera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7215/0947/files/dummit_and_foote_abstract_algebra_solutions.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_off00005e4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E4A | 5192 bytes |
SHA-256: e0a7d0676ca944a726e50fb31d022cdc01b06b3c4757d260eed6a5795dd2db85 |
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font_01_sfnt_off00007016.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7016 | 14028 bytes |
SHA-256: ebfcdc2a0ad69333f75827a92c3ac697a0f48bc56e02be1c6b051cf88c1fd9b0 |
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