PDF malware analysis — malicious · 1b33999756a83006

MALICIOUS

PDF

56.4 KB Created: 2020-10-17 21:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: db96dceeefab1f5762353a00be56d6c4 SHA-1: 77d9f031df4348111b7bcda5c2d6b620f316e7f6 SHA-256: 1b33999756a83006119a1a098128add6757952d739a82dc43289caf6887a4417

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://gettraff.ru/123?keyword=high+school+yearbook+examples+pdf In PDF document text
- https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/jowafutexeseso-fifoxeweto-texoj.pdfIn PDF document text
- https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/b726ec796bb5.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3718456.pdfIn PDF document text
- https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/2161657.pdfIn PDF document text
- https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
- https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/jifolotaj.pdfIn PDF document text
- https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/genakafas.pdfIn PDF document text
- https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/ramofikoxowido-bikizuxiso.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.pdfIn PDF document text
- https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/vinemimamuzar.pdfIn PDF document text
- https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/savowipobow.pdfIn PDF document text
- https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/xenemavurinap_jokepirewiteda_fijalezej_gemewije.pdfIn PDF document text
- https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/7443628.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/1/0438/4060/2269/files/gamowasizopozam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/3571/6515/files/names_meaning_star_boy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4962/1406/files/lixizipaxexofeweki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0459/1737/2565/files/nawigexuba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1924/7514/files/heno_de_pravia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0476/6747/8694/files/43464459458.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9072/2454/files/mountain_bike_shift_cables.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f22fbcb9-f627-4a5a-bff2-297712995585/46203908110.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d9cf725-e328-43a9-ac7e-cf10083a89f8/duvumozoz.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_off000073e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73E1	12240 bytes
SHA-256: `d2007788a445b527583186761581784f119178481577ce8dd4a42eab4a82c341`
`font_01_sfnt_off00009b9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B9C	5904 bytes
SHA-256: `f79ebd9ce2b727dea9e611c7dc5e8b34813f3ef2a5c5e3c192163e4781878127`
`font_02_sfnt_off0000af96.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF96	10532 bytes
SHA-256: `ee4398119485074860198d74fccb9cf37b444e339c246b2edb1e39e5a1275583`

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