PDF malware analysis — malicious · 450de266719b0bcd

MALICIOUS

PDF

41.3 KB Created: 2020-08-17 03:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 21ddeb7f67430708680aeed2b1beafb0 SHA-1: 1bfd51489dba9a347f63b731ee161164219cf6ae SHA-256: 450de266719b0bcddeb627bcc04839e72225089c2c2763ed9e82880564e9dc7a

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to cdn.shopify.com, but one critical link redirects to a known malicious domain (ttraff.ru). The document body, though heavily obfuscated, contains the string "Bilibili video 2018" and the malicious URL, suggesting a lure. The presence of numerous external PDF links and a malicious redirector indicates a phishing or social engineering attack aimed at directing users to harmful content. The heuristic firings confirm the presence of malicious redirector links and a link farm, supporting this assessment.

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
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.ru/pify?keyword=bilibili+video++2018
- http://files.coast1031.com/uploads/1/3/1/4/131484328/1831852.pdf
- https://cdn.shopify.com/s/files/1/0438/6249/1286/files/anestesia_dental_en_el_embarazo.pdf
- https://cdn.shopify.com/s/files/1/0434/1504/4252/files/45700101042.pdf
- https://cdn.shopify.com/s/files/1/0434/8831/3506/files/citizen_ana_digi_temp_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/0749/8647/files/ziduwebukelitab.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sebifoxof.pdf
- https://cdn.shopify.com/s/files/1/0430/0665/6666/files/jimaniliniferu.pdf
- https://cdn.shopify.com/s/files/1/0432/0080/7074/files/xelipuwu.pdf
- https://cdn.shopify.com/s/files/1/0431/8996/0865/files/22549367237.pdf
- https://cdn.shopify.com/s/files/1/0434/1566/6840/files/64079399913.pdf
- https://cdn.shopify.com/s/files/1/0433/1143/1838/files/33625994532.pdf
- https://cdn.shopify.com/s/files/1/0434/7245/3797/files/fagatibojin.pdf
- https://cdn.shopify.com/s/files/1/0431/7508/4193/files/gutirudosene.pdf
- https://cdn.shopify.com/s/files/1/0433/3341/9160/files/35094993805.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_off0000645c.bin` `5960241f02d012a0675f123d2f66b279d724909d500d2894f96e3df19b74c9bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x645C	5104 bytes
`font_01_sfnt_off000075db.bin` `0fea82da45d18da92c0150e3e3cf74baec7fc659f271590fd727c69b9efbb58a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75DB	10228 bytes

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