MALICIOUS
210
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a mass of external links, many of which point to a link farm designed for SEO manipulation. One critical heuristic identified a malicious redirector link, which is a common technique for delivering malware or phishing pages. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. The presence of a 'handwritten receipt template' lure combined with the malicious redirector suggests a phishing or malware delivery attempt.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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=handwritten+receipt+template+word In PDF document text
- http://files.doorwaystoadventure.com/uploads/1/3/1/3/131383575/laliwowupumo.pdfIn PDF document text
- http://nefefajun.bsr-project.org/uploads/1/3/1/4/131406717/3de1064fab250.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/1/0431/2327/7973/files/possessivpronomen_deutsch_tabelle.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1122/7300/files/22303779896.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/unanswered_calls_do_not_go_to_voicemail.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4457/7178/files/winekes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3293/6605/files/benzophenone_msds.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9070/5574/files/capitalizing_titles.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4606/0710/files/norfolk_southern_rail_map.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5723/3576/files/40251900946.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9758/7861/files/minecraft_pc_apk_1._12.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3346/8839/files/wejowobuditej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0223/8875/files/pmay_offline_application_form.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b720.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB720 | 2828 bytes |
SHA-256: dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21 |
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font_01_sfnt_off0000c11a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC11A | 5096 bytes |
SHA-256: 8cb23da5db65b6adcf1e736127f3e65f69c790334b80429e46af73859782ce49 |
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font_02_sfnt_off0000d25e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD25E | 9932 bytes |
SHA-256: 59655e5a99a365a5cf3147989cbca2efa833143c7f2de1fe35aa2c68c0abde08 |
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