MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=convert+cdf+to+pdf+python'. Another heuristic flagged a large number of external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ximulomonarosaw.pdf', suggesting a link farm or distribution mechanism. The presence of a 'download button' lure further supports a malicious intent.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=convert+cdf+to+pdf+python In PDF document text
- http://files.massyouthbuild.org/uploads/1/3/1/4/131453252/6165755.pdfIn PDF document text
- http://files.kindactswarmhearts.com/uploads/1/3/0/7/130775997/4774485.pdfIn PDF document text
- http://files.nationalconstructionsafetyexecutives.org/uploads/1/3/1/3/131379894/bakudajijina.pdfIn PDF document text
- http://files.careerhighschool.org/uploads/1/3/1/4/131407274/xazebo.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/1/0433/0687/7080/files/ximulomonarosaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5803/6889/files/pirekov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5896/1315/files/10246609452.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3580/4319/files/74667309829.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1915/8183/files/fupiropamimadewenage.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5725/9420/files/20638066112.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8580/0358/files/belowisimexoxowa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4953/3088/files/letaxibefewulali.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1632/1184/files/dubinumisuwobera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6512/2720/files/13002391830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5258/9465/files/kedadojig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6566/1853/files/acrobat_editor_free_download_for_windows_8.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_off0000ad4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD4A | 4888 bytes |
SHA-256: 5666c67edf6fe11c0be6b524759ee7e4bd6c0e64add8c525befe893252a6e93a |
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font_01_sfnt_off0000bdfa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDFA | 10416 bytes |
SHA-256: a6d7ed76abb4f0c5660ce901c802dc44e29aceeef87ea0e5de6e3413c189fb0f |
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