PDF malware analysis — malicious · a6ddb280e5b0c123

MALICIOUS

PDF

55.6 KB Created: 2020-09-01 07:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 88721827a4792a1eb7fc542dc256b9a2 SHA-1: e81e22a2cd84f201046a6686c3425cd7fb7f110e SHA-256: a6ddb280e5b0c123e94ca26458061f748bc7cd62ffe43c25d64b8f251377c9f0

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, many of which point to a redirector URL. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for educational content. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt.

Heuristics 3

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.
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.cc/pify?keyword=reading+context+clues+practice+exercises+answer+key
- https://static.usrfiles.com/ugd/83b1b3_892f5e4608a249618ede42fccb96578e.pdf
- https://static.usrfiles.com/ugd/b8c837_1516538660044be79637c72da6bec997.pdf
- https://static.usrfiles.com/ugd/3dd68e_c04a15a7f5434a09a74b266f6e35e338.pdf
- https://static.usrfiles.com/ugd/1fbf8b_7f4999e7bfaf4abcad7a1953cabad313.pdf
- https://cdn.shopify.com/s/files/1/0430/5181/0969/files/jevofarujatawuj.pdf
- https://cdn.shopify.com/s/files/1/0435/7790/1219/files/play_store_karo_mujhe.pdf
- https://cdn.shopify.com/s/files/1/0440/5084/1750/files/62743543290.pdf
- https://cdn.shopify.com/s/files/1/0431/7180/7381/files/aci_design_handbook.pdf
- https://cdn.shopify.com/s/files/1/0439/5276/7131/files/pelapigafitobepaz.pdf
- https://cdn.shopify.com/s/files/1/0434/8978/8070/files/zuwovijen.pdf
- https://cdn.shopify.com/s/files/1/0432/3495/1331/files/our_god_is_an_awesome_god_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0427/8019/7031/files/bohrer_schleifen_anleitung.pdf
- https://cdn.shopify.com/s/files/1/0432/2318/7614/files/fitejefeted.pdf
- https://cdn.shopify.com/s/files/1/0435/2966/6724/files/10561376041.pdf
- https://cdn.shopify.com/s/files/1/0437/1179/1253/files/94269656938.pdf
- https://cdn.shopify.com/s/files/1/0432/0041/3856/files/kavaguwepal.pdf
- https://cdn.shopify.com/s/files/1/0433/8099/8298/files/fubewefituzugezigir.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008f82.bin` `4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F82	2828 bytes
`font_01_sfnt_off0000997d.bin` `1b0319786be5d2a89c7b4dff71aec486f63c05174318d660e6508fdd3453bd6a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x997D	5576 bytes
`font_02_sfnt_off0000acb6.bin` `1abcc8d6c3f722a8dc2c2d15e63e1352f5f8d673788ab32850f5098e7d0e45b1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xACB6	9880 bytes

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