Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5adbaa1076425c…

MALICIOUS

PDF

33.7 KB Created: 2020-08-17 09:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ce7e96d6415629e177294a6d2fa6bb SHA-1: 00510c2afa91517b7ff361d9718607476a164661 SHA-256: fc5adbaa1076425c57a4926c1523e4ef3ae252d5745803a7ad6d650a5368b212
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, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=clairo+bags+piano+sheet+music`, which is presented as a lure for sheet music. The document body, though heavily obfuscated, also contains this URL. The presence of numerous links, including the malicious redirector, suggests a phishing or scam attempt to direct users to harmful content.

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=clairo+bags+piano+sheet+music
    • http://ledox.cindysearles.com/uploads/1/3/2/6/132681824/bovapurajutij-darufakomuka-bigujusopixidod-rikuredeletemas.pdf
    • http://files.cornwall2theandes.com/uploads/1/3/0/8/130813747/vesodaresuvivevemab.pdf
    • http://wixepe.thejgparksblog.com/uploads/1/3/1/6/131606731/zanawuwom-zuruziwaj.pdf
    • http://files.concertinaman.net/uploads/1/3/1/4/131452840/xevowa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/printable_paper_house_craft_templates.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/xetonapebewa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/50326611126.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/1941_atlantic_charter.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/orden_canellales.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/agua_de_beber_partition.pdf
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/96807553572.pdf
    • https://cdn.shopify.com/s/files/1/0436/3150/9664/files/87676136651.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/dumudisamegifigikos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/agroforestry_download.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_off0000479a.bin
c8b71ef74c718e88326bc32c57da2abf44855c50cda41b3918be4c853907409a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x479A 5392 bytes
font_01_sfnt_off000059be.bin
56fd62daf5208a3a914046474427a1ecb83fb086ab24e70e8648b1414c566c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BE 9492 bytes

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