Malicious PDF — malware analysis report

Static analysis result for SHA-256 3602626b72b1eb92…

MALICIOUS

PDF

57.4 KB Created: 2020-08-12 10:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7349b8675d3ea922ce7b1606ef226358 SHA-1: 4eaa2c0d39db211a32edc4bcfb26a2937de0cd95 SHA-256: 3602626b72b1eb928588a9e02eb2be0aa83cc2c36b34bc11221b98d79b11f7b6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique known as a link farm, designed to obscure the true destination. One critical heuristic identified a link to a known malicious redirector, https://ttraff.com/pify?keyword=nervio+facial+pdf. The document body is heavily obfuscated, but the presence of numerous external links, many hosted on Shopify, suggests an attempt to distribute malicious content or conduct phishing by overwhelming search engines or users with links. No scripts were extracted from this sample.

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.com/pify?keyword=nervio+facial+pdf
    • http://fepaki.alimichelleinteriors.com/uploads/1/3/0/7/130776167/b871c660f2b7c.pdf
    • http://dajuferi.beechwoodtrue.com/uploads/1/3/1/1/131164250/1aadcc6679795ce.pdf
    • http://files.neilmccarthypoetry.com/uploads/1/3/0/8/130814078/dinori_xojulusifa_dojer.pdf
    • https://cdn.shopify.com/s/files/1/0440/8855/7718/files/ralink_technology_corp.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/java_programming_book_bangla_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0454/5295/1704/files/satunedo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4210/files/82066791875.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/92743837653.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/47183432759.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/bevoxojezarepeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/fejirizojerilake.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/abwab_us_sarf_jadeed_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/jefuriwegibapepo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/vafamon.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/71429586779.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.

FilenameKindSourceSize
font_00_sfnt_off0000a413.bin
f4d5300eb91fedf44a3bff28cefb3ccc9f4cfb924d74a49ae22d7980a6f88ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA413 5000 bytes
font_01_sfnt_off0000b530.bin
b834f2aa584dc78e9bd52e895b3a8bb37f4f92493c37b0e5e2a7bf0398313080		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB530 10376 bytes

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