MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'TDS challan form 281', suggesting a lure to trick users into clicking the malicious link. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many hosted on shopify.com, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious IOC is the redirector URL.
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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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=tds+challan+form+281 In PDF document text
- http://files.francescaarnone.com/uploads/1/3/2/6/132681694/3b58d86290.pdfIn PDF document text
- http://torefere.raydickaty.com/uploads/1/3/0/8/130874359/e3541d813ef.pdfIn PDF document text
- http://files.jennifervosters.com/uploads/1/3/1/6/131636642/rezizapakitotatari.pdfIn PDF document text
- http://files.lacert.org/uploads/1/3/1/6/131637881/4934386.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/1/0428/8780/7129/files/the_boondocks_season_4_episodes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xagene.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4777/8469/files/airman_pds175s_air_compressor_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xazome.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6537/5908/files/bargain_stocks_neopets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4992/7327/files/71687082319.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4959/1718/files/54500195022.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2949/4940/files/aap_guidelines_for_diabetes_screening.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/0411/2545/files/asset_performance_management.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5533/3027/files/mechanical_and_technical_ability_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0392/6939/files/xufuzer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0667/9447/files/85905348297.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6413/0726/files/bakajilotubo.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_off00006b79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B79 | 5128 bytes |
SHA-256: d6787101a9b417c33ecd7892f16aa896772cc60f998950c71d8f4b480f99391c |
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font_01_sfnt_off00007ca5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CA5 | 10140 bytes |
SHA-256: 7f97198e9daa25a3781482b4b31fdb6cbc20ea1cbf99a19629835af11d1f3d34 |
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font_02_sfnt_off00009f69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9F69 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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