Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db5e4eafee001ab…

MALICIOUS

PDF

43.4 KB Created: 2020-08-14 01:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40c937773eb08a7abe715c89ee78f3d1 SHA-1: ce028c1e55f3cc38d5257586107b824e64b5ac68 SHA-256: 8db5e4eafee001ab71ddec09163400d3a56f4124626919428297c15db586b21e
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm and another flagging a link to a known malicious redirector. The document body itself is largely unreadable, but the presence of the malicious redirector URL suggests an attempt to lure users to malicious content. No scripts were extracted from this sample.

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=afmg+ease+manual
    • http://files.melissarae-photography.com/uploads/1/3/2/6/132681308/1928638.pdf
    • http://files.hubcapanniepky.com/uploads/1/3/1/3/131379118/tomafu_kogifibamewiro_lexom.pdf
    • http://juzubif.metalwitchh.com/uploads/1/3/0/9/130969761/rifagoxemixetej-refosokodusite.pdf
    • http://files.katprimeau.com/uploads/1/3/1/4/131407692/6436089.pdf
    • http://lofumoj.smithpoolservice.com/uploads/1/3/2/6/132682076/norezekedejozoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/48205402774.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/us_passport_renewal_name_change_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/2783/9641/files/fojitivosofigexol.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/70255686383.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5247/files/83832132840.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/62416281576.pdf
    • https://cdn.shopify.com/s/files/1/0429/6094/5305/files/.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/jezibixubevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/factors_affecting_biotransformation_of_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/16658885627.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/abbyy_transformer_3._0_full_trke.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/11455546301.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/selenium_webdriver_java_api_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/wimegomi.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_off00005e24.bin
3716715f29d5f67c34777dc3838d7c6d4068c1082f3614b5689a172cb09861ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E24 4624 bytes
font_01_sfnt_off00006dbd.bin
7f06226e46eabf32a51e706ca39dcbd678ee327b6fe5c6694961d500fa7f36ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBD 11388 bytes
font_02_sfnt_off00009280.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9280 4324 bytes