PDF malware analysis — malicious · 445fb33cf58701a9

MALICIOUS

PDF

67.0 KB Created: 2020-10-23 06:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: f952b0002d18b142b8d094fa86df0181 SHA-1: 7afc555396fa9b875b207b10885edf9020f9e82f SHA-256: 445fb33cf58701a9a4c7a310680afa2df5e4508c90811b1c0960ae19960f598e

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://ggtraff.ru/aws?keyword=american+english+file+1+teacher%2527+s+book+pdf+resuelto In PDF document text
- https://cdn-cms.f-static.net/uploads/4369923/normal_5f890eb3cd0ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369772/normal_5f8840942d61b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366005/normal_5f86f416a9ff4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379606/normal_5f924462bfdaa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366676/normal_5f9203b4b49a6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366958/normal_5f8c082620de2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369168/normal_5f88d02d7e4de.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/1/0496/6603/1775/files/wifredo_lam_the_jungle.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/2423/8757/files/love_nikki_dress_up_queen_guide.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files/11420665901.pdfIn PDF document text
- https://s3.amazonaws.com/wupiwupiwot/rastafari_bible_verses.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/22028738540.pdfIn PDF document text
- https://s3.amazonaws.com/luxelula/crossfit_bodyweight_exercises.pdfIn PDF document text
- https://s3.amazonaws.com/zuxadol/xobuwepivizevepaku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/5732/2405/files/somurovirozome.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/7944/9767/files/new_sat_reading_strategies.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/1411/7293/files/coffee_grinder_manual_uk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9204/2137/files/powerdirector_14_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8470/2386/files/buku_biologi_genetika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2547/1400/files/91872632749.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/6442/1283/files/63146272605.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/0132/9847/files/ilocano_song_lyrics.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_off0000b2b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2B4	5732 bytes
SHA-256: `4e6066a715900eefe1b95aa3ef7ce716116c64b6d478b731540391e310eee137`
`font_01_sfnt_off0000c5f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5F3	12248 bytes
SHA-256: `44ee6697996669b6c5fa79e648f7fec547e79bc389133ed69d13de4db9eab086`
`font_02_sfnt_off0000ef5f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF5F	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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