PDF malware analysis — malicious · ac73d345ace6efc0

MALICIOUS

PDF

41.3 KB Created: 2020-09-01 12:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4724a4ce8fab08fdd5e0ffbe4ad99c4c SHA-1: 3791586696a09b7a2f5ec4dd5a62e42e01e9b3f5 SHA-256: ac73d345ace6efc017e70a72cccf6c507a53068aae895aef4b5217c8cfdb23b0

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=dilapidation+report+app' and text suggesting a lure for a 'dilapidation report app'. The presence of numerous external PDF links, many hosted on shopify.com, suggests an attempt to obscure the final malicious destination or to create a link farm for SEO poisoning. The primary malicious IOC is the redirector URL.

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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.club/wix?keyword=dilapidation+report+app
- https://cdn.shopify.com/s/files/1/0433/0048/7332/files/adrift_movie_in_tamil_dubbed.pdf
- https://cdn.shopify.com/s/files/1/0438/7173/1880/files/kikofesibavasezegif.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
- https://cdn.shopify.com/s/files/1/0432/1008/0420/files/bo3_zombies_shadows_of_evil_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/9199/2480/files/6618318496.pdf
- https://static.usrfiles.com/ugd/a382ee_03ad555d212e42cc8dfa9b9aebda8755.pdf
- https://static.usrfiles.com/ugd/f80014_5c1d9c846f544a69861fccba0760b124.pdf
- https://static.usrfiles.com/ugd/756799_675a8bea05bf41ccb3d175c7804128ea.pdf
- https://static.usrfiles.com/ugd/b4609a_0a86983b459b4534b367f7545b78b9cd.pdf
- https://static.usrfiles.com/ugd/9219f8_efa3db1ed7ed4991b3858580b0ea3596.pdf
- https://cdn.shopify.com/s/files/1/0436/2141/7123/files/dadodizojafaxano.pdf
- https://cdn.shopify.com/s/files/1/0463/6229/6475/files/bosque_county_sheriff_report.pdf
- https://static.usrfiles.com/ugd/ddb60a_f76bfff3b56d4fd0a2105c2da28425a3.pdf
- https://static.usrfiles.com/ugd/37428b_e094e47559804864826c213b97a39858.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_off00006637.bin` `3fd0daab7400d7bc3a41b10cfc63f26169c304f406437672f18f81f9b5dcdc5d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6637	4772 bytes
`font_01_sfnt_off00007680.bin` `31ba03d15eaae313fd73826fe5d4ed083d79eba2473a8ba16b09ffb1d6f3dfec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7680	9896 bytes

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