PDF malware analysis — malicious · 5d5d0da3aef85ab1

MALICIOUS

PDF

38.4 KB Created: 2020-08-29 20:08:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9a1017340f1088d3047bc8461cfa0f3c SHA-1: c73f92245c86a4b7f95e9f45e023f0f88ac49c27 SHA-256: 5d5d0da3aef85ab1302044be45166b1bc61af6c08b531b1a5000bafd5461dc05

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector to a malicious URL, suggesting it is used for SEO poisoning to drive traffic to malicious sites. The document body text, while garbled, includes the search query "New york tune jo na kaha mp3 free do" and the malicious URL, indicating an attempt to lure users. No scripts were extracted, but the presence of multiple external links and a malicious redirector points to a phishing or malicious content distribution scheme.

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/wix?keyword=new+york+tune+jo+na+kaha+mp3+free+do
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/pomol.pdf
- https://cdn.shopify.com/s/files/1/0428/5884/0223/files/sejoko.pdf
- https://cdn.shopify.com/s/files/1/0440/2846/1206/files/88789913879.pdf
- https://cdn.shopify.com/s/files/1/0433/9423/6572/files/above_the_clouds_movie.pdf
- https://static.usrfiles.com/ugd/b8c837_72f08b0b5978418bb6b94506e83aa213.pdf
- https://static.usrfiles.com/ugd/b8c837_ef542ec166994c67846a15a9a62696dc.pdf
- https://static.usrfiles.com/ugd/58a813_91105e07c6fe4d62ad688c834c4d5dd3.pdf
- https://static.usrfiles.com/ugd/b8c837_f4afea57049f47549d6eebe7b958a90e.pdf
- https://static.usrfiles.com/ugd/b8c837_085437aa8ead483f82bd694a5c504171.pdf
- https://static.usrfiles.com/ugd/a48928_925efa27d9824ce58e82fbb3b3c389ce.pdf
- https://static.usrfiles.com/ugd/bb13a2_932e52fe01474b22a04b3f441867ddfb.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_off00004ea4.bin` `7dbdb00ade90ef6e7326d002e1938b7911f3441839fb25f9b796a69f23cc5b97`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EA4	5540 bytes
`font_01_sfnt_off0000617c.bin` `f4e8185a8f687acf41a7f610c7a62a30057186931f72857edca3e17cf845e76b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x617C	14044 bytes

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