Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a533fc4388b8a81…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 05:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c12a25243916a105fd84b1619cbf5a4 SHA-1: aebf94aa7d4b908e415cafce38e93c36f33c7c8c SHA-256: 3a533fc4388b8a81d8bd801a1a67938788dad4c8df12de099b200d1757dc2153
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body also contains this URL along with numerous other links hosted on Shopify and other domains, indicating a link farm. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document's text is designed to trick the user into installing something, likely related to the malicious link.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=lightweight+pdf+reader+linux
    • http://bapezi.furgetusnotrescue.org/uploads/1/3/0/7/130738714/a42855738715.pdf
    • http://files.sharidellapenna.com/uploads/1/3/0/8/130813988/romijojeledatuxusepo.pdf
    • http://duwit.laboniteca.com/uploads/1/3/2/7/132740435/sojopajugele.pdf
    • http://files.audienceseurope.com/uploads/1/3/1/1/131164425/0c083032.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/birsen_yaynevi_statik_kitab.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/58732839339.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72593533024.pdf
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/effective_academic_writing_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/hssc_lab_assistant_answer_key_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/hvac_technician_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/lesabekumupolabazupun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/76913920344.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/vuzuwowewawarozejoxilo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/53881654973.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/jajabaselelarurad.pdf
    • https://cdn.shopify.com/s/files/1/0440/8321/6549/files/zubamokisexodeg.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_off00006900.bin
2266d2253154586ac7d4b4757af1b29365e3c953ad1bdb103ed9808de6283184
pdf-font-stream PDF embedded font (sfnt) at offset 0x6900 5228 bytes
font_01_sfnt_off00007ae3.bin
2017392d16c7f135deb07f4b524de49d055a0eafe1c31982efe87e0ac0ddd578
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE3 10364 bytes