Malicious PDF — malware analysis report

Static analysis result for SHA-256 22715981cc45e17c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 00:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dc4f622d834d373a10bd6dcae64ebc1 SHA-1: 5c84dcaa5d37c437f7d5e5e3880b49baacf3f67e SHA-256: 22715981cc45e17ccef0ba3b87acd7590cf691fc7b358a910cb074a7f4f2ff91
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with one critical heuristic firing indicating a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=self+presentation+example+pdf', suggesting a lure to trick users into clicking a malicious link. The presence of numerous shopify.com links indicates a link farm used to obscure the true malicious destination.

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=self+presentation+example+pdf
    • http://files.machining-technology.com/uploads/1/3/0/7/130740573/6d8739e543be.pdf
    • http://gedesev.cismaths.co.uk/uploads/1/3/1/4/131409309/446c53bd8328480.pdf
    • http://saxek.experiencefirstaidandcpr.com/uploads/1/3/1/6/131606407/610122.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/fitatonolerowejogus.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0133/files/wudajupopogot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/wemaja.pdf
    • https://cdn.shopify.com/s/files/1/0436/5228/4566/files/soxum.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/best_business_management_books.pdf
    • https://cdn.shopify.com/s/files/1/0439/8628/8798/files/aggregatibacter_actinomycetemcomitans.pdf
    • https://cdn.shopify.com/s/files/1/0434/6478/6086/files/biological_classification_of_organisms.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/toloxitudosasaginiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/rutumebademonudil.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/risultati_serie_a_2020_19.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_off0000682d.bin
9c089032a0f81c5d988e84118f8f877e5063fb191702b72886a513102291caf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5356 bytes
font_01_sfnt_off00007a54.bin
fdcb2a8ad81d464323cde8a881b25ac856e2c9bdfa67a56aae0c57a3f5e0102c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 9652 bytes

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