PDF malware analysis — malicious · 755391835d2e18ab

MALICIOUS

PDF

40.9 KB Created: 2020-09-01 11:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a3b14420ee92223574e34823141b324b SHA-1: 11617a3f8f804ba5a50522c82f78495c40b07163 SHA-256: 755391835d2e18abbd77230e44e28e645e81182bff3aa3ea534e3155ed4bdabd

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.com/wix?keyword=format+bonus+letter+employee`. It also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the same malicious URL and a plausible lure related to employee bonuses, suggesting a phishing attempt.

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=format+bonus+letter+employee
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/2457/9751/files/33480299035.pdf
- https://cdn.shopify.com/s/files/1/0436/1220/9314/files/addicted_2014_full_movie.pdf
- https://cdn.shopify.com/s/files/1/0436/4438/7481/files/how_to_search_chrome_history_by_date.pdf
- https://cdn.shopify.com/s/files/1/0428/9429/5203/files/forty_five_dollars.pdf
- https://cdn.shopify.com/s/files/1/0429/3158/5180/files/webisa.pdf
- https://cdn.shopify.com/s/files/1/0432/8387/3942/files/pltw_poe_final_exam_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0435/1849/2824/files/like_button_youtube.pdf
- https://cdn.shopify.com/s/files/1/0465/3252/6238/files/dovebosanages.pdf
- https://cdn.shopify.com/s/files/1/0437/9528/4130/files/96689301502.pdf
- https://cdn.shopify.com/s/files/1/0437/3122/2689/files/cae_exam_tests.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_off000061d1.bin` `cd8f292adbfade712976d6e30a482840c6b90564d3862d7ae27634f5da7f4a45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61D1	5164 bytes
`font_01_sfnt_off00007347.bin` `34172c1d43b3747cb037da71533905f623808498b051405cd1af1d7bcab69c14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7347	10512 bytes

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