PDF malware analysis — malicious · 0cc4eb087c0d1649

MALICIOUS

PDF

39.1 KB Created: 2020-08-23 00:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 128ad1adc2128fc5f8fbef9068f73189 SHA-1: 52101657f24b1a4e638260f00b6df3d0b2338322 SHA-256: 0cc4eb087c0d1649eadcf68bcad2a40ebbf2b5f3b8535b9d9009e809d32a4909

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating it leads to known malicious redirector infrastructure. The document body, though partially corrupted, contains a URL that matches the redirector found in the heuristics. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to disguise malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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.com/pify?keyword=annotated+bibliography+note-+taking+guide
- http://files.bluebirdagllc.com/uploads/1/3/1/4/131455621/sadisado.pdf
- http://files.magiqatlas.com/uploads/1/3/0/8/130814513/zivatemurijupizowigi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/6081/2189/files/70105256443.pdf
- https://cdn.shopify.com/s/files/1/0432/3885/0724/files/87461821432.pdf
- https://cdn.shopify.com/s/files/1/0430/9748/9572/files/tratado_de_bucareli_resumen.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdf
- https://cdn.shopify.com/s/files/1/0436/2174/4803/files/pevul.pdf
- https://cdn.shopify.com/s/files/1/0433/4059/5352/files/god_answers_our_prayers_quotes.pdf
- https://cdn.shopify.com/s/files/1/0433/4164/3928/files/kingdom_rush_vengeance_level_guide.pdf
- https://cdn.shopify.com/s/files/1/0432/9344/2208/files/23427901352.pdf
- https://cdn.shopify.com/s/files/1/0430/3755/6889/files/wow_classic_mystery_meat_recipe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005b6f.bin` `dbdbffcb805c82cc3a2996d2fdc810f7a9c82480a2f593e7e006d134abe2ebed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B6F	5368 bytes
`font_01_sfnt_off00006daf.bin` `8674117f2d7f7e254c33afa343f4e1bd0ef28fd82c8f34da372b43266e66c880`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DAF	9992 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.