PDF malware analysis — malicious · 253525063979b906

MALICIOUS

PDF

63.0 KB Created: 2020-10-22 11:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: a30abb82446590c334b8910dcc0e50d5 SHA-1: aadbfaba348b57334f9b0aed959b111f0f1fdac8 SHA-256: 253525063979b906f308e9f86df675d1f24bf3a2aba5ea6483a433569f16541a

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://ttraff.club/pify?keyword=nucleic+acids+molecular+genetics+worksheet In PDF document text
- https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/dda22a8fba453.pdfIn PDF document text
- https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/be4ba3fce.pdfIn PDF document text
- https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/bugujo.pdfIn PDF document text
- https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/4bfde9f.pdfIn PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/juriw-debiwusilup.pdfIn PDF document text
- https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/jokokivupekimimedu.pdfIn PDF document text
- https://givexikiduxa.weebly.com/uploads/1/3/1/3/131398224/purapi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366642/normal_5f8fdbb0a277c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384035/normal_5f8ce53fa9b21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366005/normal_5f87125c9392a.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/1/0489/4454/5969/files/resovapikurirukigikobug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9382/6463/files/mawepanonedawugi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/8837/0582/files/scratch_photo_app_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/6093/1991/files/33333774505.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9448/4147/files/92524652543.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/69062175392.pdfIn PDF document text
- https://s3.amazonaws.com/fuwawibu/blessings_laura_story.pdfIn PDF document text
- https://s3.amazonaws.com/subud/present_simple_affirmative_negative_interrogative_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/bakoloj/sezim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3846/6467/files/modele_fulare_tricotate_manual_youtube.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/7537/9622/files/thy_word_is_a_lamp_unto_my_feet_sheet_music.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/1411/7293/files/69460066688.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_off00009f5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F5D	5360 bytes
SHA-256: `eff3556fc9224e71c1c1196f705213493318a8268f182f26d60aca7cc2e173a0`
`font_01_sfnt_off0000b178.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB178	14084 bytes
SHA-256: `0fd4c555c0083d692af470cf46382a3da9f94ceaf535d5fc7ca2bdf558a5b28e`
`font_02_sfnt_off0000de45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE45	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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