PDF malware analysis — malicious · 871b3621ba358289

MALICIOUS

PDF

42.6 KB Created: 2020-09-01 01:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d606f40fd3a755863d53953e53053360 SHA-1: 586de6aeac29b56578b6e47da0d9bf8b5600e83e SHA-256: 871b3621ba3582899650af373a4ac7c24f332c46e95ec24e36f42197f2a58f0f

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the same malicious URL. This suggests a social engineering attack aiming to redirect users to malicious content.

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=best+bollywood+movies++site+in+hd
- https://cdn.shopify.com/s/files/1/0429/9508/9559/files/vistas_4th_edition_download.pdf
- https://cdn.shopify.com/s/files/1/0429/1067/9203/files/gemejojaka.pdf
- https://cdn.shopify.com/s/files/1/0433/9472/8103/files/spring_mvc_tutorial_with_eclipse_and_tomcat.pdf
- https://static.usrfiles.com/ugd/9219f8_216ebb3ff27b4b0a94b8d96715e3e88e.pdf
- https://static.usrfiles.com/ugd/63d3ad_ce5837a102d044f3b0dda9bf0dc580eb.pdf
- https://static.usrfiles.com/ugd/d78803_e988b393dcdd4935aafbf1ce961d2944.pdf
- https://cdn.shopify.com/s/files/1/0432/3203/4980/files/peguxekozibizazupedu.pdf
- https://cdn.shopify.com/s/files/1/0461/6804/7768/files/20689714310.pdf
- https://cdn.shopify.com/s/files/1/0434/3844/0598/files/samsung_smart_care_vrt_plus_manual.pdf
- https://cdn.shopify.com/s/files/1/0439/9611/9198/files/cg_police_admit_card_download.pdf
- https://cdn.shopify.com/s/files/1/0434/1065/3338/files/81001328227.pdf
- https://cdn.shopify.com/s/files/1/0427/6859/7158/files/texizaz.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000698c.bin` `1f3f625e878eba230a7f2794c7dff72d1653762fcd12ef838a8f4e057d85aa78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x698C	5200 bytes
`font_01_sfnt_off00007b33.bin` `1c5d7df3f200a956489087379ee74b4d6439cc7998e268032bd1c38c998b88fe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B33	10128 bytes

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