Malicious PDF — malware analysis report

Static analysis result for SHA-256 33babb5105aa0237…

MALICIOUS

PDF

39.0 KB Created: 2020-08-05 17:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5975707bbd2388926c47b2262c9ae7f SHA-1: d79fe39b585eb31e85889b6ba846fbe03c657643 SHA-256: 33babb5105aa0237d18df59eb7cfb4ee3927403548745dfec9d5fde7d82785bd
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains the same text as the malicious URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=abu+talib+al+makki+pdf
    • http://files.onlinekitchensdirect.com/uploads/1/3/1/6/131637402/1782254.pdf
    • http://files.legendaryshadowstalkers.com/uploads/1/3/1/6/131606789/1633751.pdf
    • http://ninawibi.2732991.com/uploads/1/3/1/3/131384429/cde59ef7b.pdf
    • http://files.choosehadley.org/uploads/1/3/0/8/130873943/2256023.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/20311744406.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/gezawebowuvab.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/14878504187.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/demadumedopanefiguwobitod.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/xipunegogizuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/ziwevujetedofujeruxowolot.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/31649508939.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/lamixobigotodagago.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/57658429270.pdf
    • https://cdn.shopify.com/s/files/1/0432/6912/8354/files/sezasudoxol.pdf
    • https://cdn.shopify.com/s/files/1/0437/8450/3453/files/vista_print_business_card_size.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_off00005b7a.bin
c67e33247799a7b385236385c9a98deb748dcc779844730dd7d487f4d035f9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7A 5108 bytes
font_01_sfnt_off00006ccd.bin
76017348ee71cc666b2e8157872f6a01b7129030c6c216c6561614e91ddf9d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCD 10088 bytes

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