Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8d530fcc4846a5…

MALICIOUS

PDF

34.2 KB Created: 2020-08-21 06:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eed40511e782548aa43519ec4f8da7c SHA-1: 81debc939ecf83d4abfbf6484ae14f6782e4ff24 SHA-256: 1c8d530fcc4846a5570630bdfa0ffc8abcc9615dc289b41478f48b00163d94aa
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm strategy to obscure the ultimate malicious destination. The document body contains garbled text but includes the target URL, reinforcing the malicious redirector finding. No scripts were extracted, but the primary attack pattern involves directing the user to malicious infrastructure.

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=azadi+divine+song+free
    • http://files.clickfourhelp.org/uploads/1/3/1/4/131409037/guvilipuvagigos-renol-jomijuwitixame.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/rufupuxonuleguk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/minecraft_servers_parkour.pdf
    • https://cdn.shopify.com/s/files/1/0438/0822/7490/files/65749364306.pdf
    • https://cdn.shopify.com/s/files/1/0436/2980/5726/files/fasolusubovapiresix.pdf
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/jizuwuvufenesipenurune.pdf
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/83821458836.pdf
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/english_spelling_rules_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/niwoz.pdf
    • https://cdn.shopify.com/s/files/1/0465/1584/7318/files/dejirutisufuvizut.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/aurlie_laflamme_tome_9.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/nasemezomapolorofomi.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/xodizuriwudebewodudunu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/61087243420.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/97854469495.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_off00004999.bin
21ab5de0dcc1d845926a042aeb4d9ecff0d03ebe632c627f1425975f187ad33e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4999 5144 bytes
font_01_sfnt_off00005b33.bin
6cdbfcedb37b09818eb949a6ec08eb33775013ecc119732f8b0ceee4bbf56408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B33 9800 bytes

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