Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eeb165ee5d6cd41…

MALICIOUS

PDF

43.5 KB Created: 2020-08-16 18:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e10a0accf047813ba27743f5f619411 SHA-1: 53980861e9e0386159fb023cb9cd2e5f2ba24a61 SHA-256: 9eeb165ee5d6cd41c7a34edc3ae8d30bacfacffd7801a78cb76e9a29b886ce4c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a redirector. The primary URL points to a redirector service, which is a common technique for SEO poisoning or to mask malicious destinations. While no scripts were extracted, the sheer volume of links and the use of a redirector suggest a malicious intent to lure users to potentially 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.ru/pify?keyword=basic+information+about+upsc
    • http://files.companythreesixty.com/uploads/1/3/0/7/130776786/tumagolumapoziz-nidenibomuzev-susukidiwotaz-jiguxo.pdf
    • http://wagepi.inneractiondance.com/uploads/1/3/1/8/131857631/e1151f947e644.pdf
    • http://jerisiso.courageousgirls.com/uploads/1/3/0/9/130969577/nuwozopule.pdf
    • http://files.countrysidechurchseminole.com/uploads/1/3/2/7/132710491/3642e9.pdf
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/29774361664.pdf
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/opposite_adjectives_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/wezefarudozipipafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/cbse_compartment_exam_online_form_2019.pdf
    • http://wuxezef.stokes-farm-inc.square.site/uploads/1/3/1/3/131398547/c2dfcfae908b452.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/20646776661.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/9283777286.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9202/files/defobikawafewi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/jituweboripepolif.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/54789719824.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/36014418236.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_off00006ac9.bin
e1c208c162d9b70d8ca03896dba547b22f5194f9971e5fc472674409aa07d754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5320 bytes
font_01_sfnt_off00007cb8.bin
f8a05f74f74c3dc136e8f344eaba18c1d9a98168954a76baeb99f849d9396080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB8 10548 bytes

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