PDF malware analysis — malicious · 7e371e45ca48d3b4

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 05:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: da0182262b00b4ba1fb4e7fae6abf016 SHA-1: 02b267d0ccb807f92d1d9da5fc5b676047b711b3 SHA-256: 7e371e45ca48d3b4a35166b3c1ac887f3329b63f75b23928da0b09753276ed64

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicative of an SEO link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.com/wix?keyword=destiny+2+leviathan+raid+guide+reddit, which is likely used to redirect users to further malicious content. The document body contains garbled text but includes the target URL.

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=destiny+2+leviathan+raid+guide+reddit
- https://static.usrfiles.com/ugd/804ff6_58cf128a792244b0a88567a5b48c9245.pdf
- https://static.usrfiles.com/ugd/b8c837_947eab0c829a4592a34ce21e14ef09e8.pdf
- https://static.usrfiles.com/ugd/822ecd_791e6a6101324c60aa1b8fbb33266141.pdf
- https://static.usrfiles.com/ugd/b8c837_ef21abd4d10d4d0490ede476d398db3f.pdf
- https://cdn.shopify.com/s/files/1/0433/3545/0774/files/programming_arduino_getting_started.pdf
- https://cdn.shopify.com/s/files/1/0432/7027/5236/files/nerusavoripadetumoside.pdf
- https://cdn.shopify.com/s/files/1/0433/9433/4870/files/minotoma.pdf
- https://cdn.shopify.com/s/files/1/0435/3730/1653/files/gofotufawixadasap.pdf
- https://cdn.shopify.com/s/files/1/0437/2873/2314/files/wunevofej.pdf
- https://static.usrfiles.com/ugd/9e41f0_2bdeb6ad052f4a5f850eca04b9ff5b97.pdf
- https://static.usrfiles.com/ugd/0047a4_73fde18a95584df4a0b3b0bb06b0eda7.pdf
- https://static.usrfiles.com/ugd/6f53d7_74f493059acf494886d531f1ee3d6549.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_off00007473.bin` `965b527ed97ca2f08cc42c88cf87fad74efc33d09d54120f04981248423fd5d6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7473	5380 bytes
`font_01_sfnt_off000086ba.bin` `15301efed4f0b091e500746b3e875b818b949a378aa4c6147b32631e7c4ca013`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86BA	10096 bytes

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