Malicious PDF — malware analysis report

Static analysis result for SHA-256 b13900a443ed3aa8…

MALICIOUS

PDF

43.1 KB Created: 2020-08-06 01:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a315aa4e6ff959bd98a65c078f89595 SHA-1: 80f55357a0af3b566cec76bd2d93e2ea8b35eb07 SHA-256: b13900a443ed3aa88236f2b6a53ca51d62663580a80560f641bd2eaf9d48c00e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=cdisc+sdtm+controlled+terminology+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=cdisc+sdtm+controlled+terminology+pdf
    • http://files.alidonaldson.uk/uploads/1/3/0/8/130873918/d8cfb9d4.pdf
    • http://files.chsplatinumpress.com/uploads/1/3/1/3/131379776/mofike.pdf
    • http://files.artandfilmlover.com/uploads/1/3/1/8/131856108/8371125.pdf
    • http://files.gnosiscanberra.org/uploads/1/3/1/1/131163740/55d447e1804d.pdf
    • http://files.fabiomanda.com/uploads/1/3/0/7/130739616/04fadd574f022.pdf
    • https://fairsharing.org/FAIRsharing.szrmev
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/23521345780.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/fujavoxebofotuzadidinugo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/81512635247.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/26930686901.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdf
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/75128972461.pdf
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/toyota_auris_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/round_a_float_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/familia_enterobacteriaceae.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/jofagobuneluraw.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_off00005c4b.bin
6fa2884d0a341bc24cc48dc57a636cb4436c7d8785fe39ee43b197b0006a0df5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4B 5180 bytes
font_01_sfnt_off00006ddb.bin
5677c870e82ddecf7c938e6a31ec274a5d8972328345459149a683ce31b9a5f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDB 10452 bytes
font_02_sfnt_off00009173.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9173 4324 bytes