Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74b65710b5db283…

MALICIOUS

PDF

46.2 KB Created: 2020-08-25 10:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e89ed86d6e741551d5ba7542c9ccac8 SHA-1: be54f941b9f1c599c9b53b82f19151b01d0b7d81 SHA-256: a74b65710b5db2835997bae7664c86b0e2196bbffe4107bdcffe23b7da4f36d7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=anvil+chorus+sheet+music+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though partially corrupted, includes the same redirector URL and a Shopify URL, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure via the embedded link.

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=anvil+chorus+sheet+music+free
    • http://files.bluechipcd.com/uploads/1/3/0/7/130738673/73c79.pdf
    • http://xawumo.elizabethcyr.com/uploads/1/3/1/4/131453872/nogasasesesan-wezavukesipa.pdf
    • http://files.susannej.com/uploads/1/3/0/7/130739239/7845282.pdf
    • http://files.soaringtortoiseelectronics.com/uploads/1/3/1/8/131872015/tepofavimaxur.pdf
    • http://tazog.amptheatreagency.co.uk/uploads/1/3/0/7/130776644/giboroninugixak-xafegipomami-fubutev.pdf
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/pexeti.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4034/files/loan_agreement_paper.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/56964131820.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/5555547927.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/29530059014.pdf
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/agile_android_software_development.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/81969016427.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/89407176433.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9868/files/calendario_oficial_2020_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0436/1378/2173/files/dejupakarixigaxesalabu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006358.bin
5209e6428e5027a0ed183488413f2d7a48b42506f343d57d3079a28bb09b6a22
pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 4960 bytes
font_01_sfnt_off0000740e.bin
88daa63cb00dd46feb731096611e1ef5e8aa095c7fcc4bdbe8753cc49b25478a
pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 10084 bytes
font_02_sfnt_off000096e6.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832
pdf-font-stream PDF embedded font (sfnt) at offset 0x96E6 16120 bytes