MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a calculus formula PDF. The file also exhibits a PDF link farm heuristic, indicating a large number of outbound links, many of which are to benign Shopify domains, likely for SEO manipulation. The primary malicious IOC is the redirector URL.
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.ru/pify?keyword=all+formulas+of+calculus+class+12+pdf In PDF document text
- http://files.theshrubberyllc.com/uploads/1/3/1/4/131406269/197277.pdfIn PDF document text
- http://files.elainejagielski.com/uploads/1/3/2/8/132814071/sewagizuj.pdfIn PDF document text
- http://files.nextgenerationcordblood.org/uploads/1/3/1/4/131437930/kogutozubovimurew.pdfIn PDF document text
- http://files.megan-livingston.com/uploads/1/3/0/7/130739288/lumaro_geseru_videnubetuz.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/1/0429/1664/2975/files/68021509620.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7708/4070/files/exercise_and_cardiovascular_health.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0049/5260/files/kuzemuberixotagakalad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/4238/4545/files/pathophysiology_of_hearing.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6628/6490/files/xulol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2373/5720/files/bodepajovirizadikesefama.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1313/4757/files/98821047064.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7427/2924/files/wii64_channel_forwarder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2338/5247/files/lazixazuxobelebilu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5048/4390/files/rational_choice_theory_summary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1594/6911/files/nunojiponalu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9508/9559/files/les_affaires_criminelles_les_plus_clbres.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009381.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9381 | 5472 bytes |
SHA-256: 0dbfee3cd551172511fec88626a348014983791ee594b3e16c62aa3848a0229b |
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font_01_sfnt_off0000a60e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA60E | 16532 bytes |
SHA-256: f3a95b24cb0996f176829d3b866f3a419ad5a14f27f1708bc33f3aa3aaff2573 |
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font_02_sfnt_off0000d991.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD991 | 16340 bytes |
SHA-256: bc775481b3234384b148fecb09583cee6edbe2a3f99fb4a17f3c618959311435 |
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