PDF malware analysis — malicious · 4c643b2183d4e173

MALICIOUS

PDF

47.9 KB Created: 2020-08-20 01:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a5c07db38d8910c17c856767f1051085 SHA-1: d55a98035f543c997182d63c4763c6abd7986047 SHA-256: 4c643b2183d4e173661666855da57ec7cc4294f6dfc56fc6cd899becdf8468f9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=city+hunter+ost+suddenly+piano+sheet+music, which is likely used to deliver a secondary payload. The document body, though heavily obfuscated, contains references to the lure content and the malicious URL, reinforcing the phishing attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=city+hunter+ost+suddenly+piano+sheet+music
- http://files.lenazavaroni.co.uk/uploads/1/3/1/4/131407530/jolis-duwubak.pdf
- http://files.racialreconciliation.net/uploads/1/3/0/8/130874435/wibokomigalusa_zimebawixuli_wunopuz.pdf
- http://pevugo.goldenbeemx.com/uploads/1/3/1/1/131164250/976981b.pdf
- http://files.shipanna.com/uploads/1/3/0/7/130739431/5a5d4caac1fe.pdf
- https://cdn.shopify.com/s/files/1/0428/6044/5855/files/13370788987.pdf
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/36693079589.pdf
- https://cdn.shopify.com/s/files/1/0429/6661/4175/files/lopezomakikavuresubaruma.pdf
- https://cdn.shopify.com/s/files/1/0437/9269/5456/files/partnership_accounting_journal_entries.pdf
- https://cdn.shopify.com/s/files/1/0427/4031/8375/files/lodovolasedip.pdf
- https://cdn.shopify.com/s/files/1/0437/7768/7706/files/ejercicios_something_anything_nothing.pdf
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/76917478167.pdf
- https://cdn.shopify.com/s/files/1/0431/8851/9080/files/danexapazodetomekiwifekel.pdf
- https://cdn.shopify.com/s/files/1/0431/6492/6111/files/zejulosarirovi.pdf
- https://cdn.shopify.com/s/files/1/0435/8432/3741/files/48449569514.pdf
- https://cdn.shopify.com/s/files/1/0439/4539/4331/files/honda_hrv_manuals.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_off00005344.bin` `932d206ae6e4aed544b6e92667064e250b3eb33bb1ab4135799f5a1b446b1e4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5344	9944 bytes
`font_01_sfnt_off000073a5.bin` `8326dc78b38880d8f3a0ef34df4920597ea85fbdbffa656ba91dc4650f1c5a6c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73A5	5320 bytes
`font_02_sfnt_off0000858c.bin` `f087f815bbec92767387cdd71112801df22faa157bb5af456c033294f09a0152`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x858C	13884 bytes

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