PDF malware analysis — malicious · c698ba177aac978a

MALICIOUS

PDF

55.9 KB Created: 2020-10-23 10:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04

MD5: 5f1cf523dc753216c274a730ba77d1b6 SHA-1: 1812a98bddc850b4921074c892de29794af6714c SHA-256: c698ba177aac978a676fd75b1d2958b10ae6964beb33cf48378ba19f770ed69f

194 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF 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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF 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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://cctraff.ru/aws?keyword=mapa+de+yucatan+municipios+pdf In PDF document text
- https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/99c3f18c74.pdfIn PDF document text
- https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/cd6fdf.pdfIn PDF document text
- https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/3253b7839a2.pdfIn PDF document text
- https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/noropemoku.pdfIn PDF document text
- http://www.opentle.orgIn 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://s3.amazonaws.com/memul/surazixiguki.pdfIn PDF document text
- https://s3.amazonaws.com/tawosutosuxi/1122524560.pdfIn PDF document text
- https://s3.amazonaws.com/kexamoxusinixu/53181281927.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/47129402629.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/29513339835.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/instrumen_akreditasi_puskesmas_2016.pdfIn PDF document text
- https://s3.amazonaws.com/remuv/bengali_to_english_dictionary_download.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/11520584152.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/4632/4382/files/veronika_wants_to_die_paulo_coelho.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/8879/5590/files/xorujedidikulelajutal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9755/3064/files/bevowuxaze.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/947101cd-ec9c-4dba-8ecb-52a617aecfcc/ejercicios_complementarios_5to_grado_bloque_4_respuestas_formacion_cye.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/14581c14-534d-4ed1-b112-1b99b7dc170f/60200263729.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8765/8141/files/sims_3_death_flower_bridgeport.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5955/9065/files/81868726256.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9543/3117/files/audio_editing_app_android_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8085/7253/files/young_goodman_brown_questions_and_answers.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000745c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x745C	14216 bytes
SHA-256: `c8f07816d3b53011e6e1b58880973b7de39598d7167166372221eae4bb07013e`
`font_00_sfnt_off000062e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62E5	5160 bytes
SHA-256: `b19a9b6c84e7bbb7cf5df3c306ab7bec10db46dee3c34647cc09e9903e24fca3`
`font_02_sfnt_off00009c30.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C30	11688 bytes
SHA-256: `46f103bdb6df5c2c8a9f89336d6c887f2ed04feb7915a8fcbc71ae63530e6a6a`
`font_03_sfnt_off0000c248.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC248	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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