Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3322c346e99528c…

MALICIOUS

PDF

46.9 KB Created: 2020-08-20 09:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 588d449fb0d400d41447890c1a7e6856 SHA-1: b1acc078459bc05137c9e86a8448b461d1fcc921 SHA-256: b3322c346e99528c55cbf39f243ad3060cb53f28746a0431a4f0479d477aaa28
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm to obscure the malicious redirector. The primary malicious link, https://ttraff.cc/pify?keyword=pronouns+worksheets+for+esl+learners, is a known malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, indicating an attempt to redirect the user to potentially harmful content under the guise of educational material.

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=pronouns+worksheets+for+esl+learners
    • http://files.tempesttradams.com/uploads/1/3/2/7/132740375/xijokave_zoziwarim_ziwedawamatora_liwanatoki.pdf
    • http://files.wlnhelena.com/uploads/1/3/0/8/130814601/c4bbd.pdf
    • http://kigowoti.johnstonlurecompany.com/uploads/1/3/0/7/130775565/435ba2696e8cf7.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/6646918030.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7543/files/sisupukujon.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9644/files/75000783921.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/dojobetigisij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovaratumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0070/files/argumentative_writing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/1444/6489/files/impact_of_absenteeism_in_the_workplace.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6049/files/82542186869.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/investigating_biology_lab_manual_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3057/files/sample_letter_for_new_business_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/bazazod.pdf
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/big_file_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/1030/0831/files/valvular_heart_disease_guidelines_2017_aha.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_off00006d76.bin
8122d34c99ac7aa0e4ae05b42a92a484363733b462014c039d87d1a7b8b3bc84
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 4848 bytes
font_01_sfnt_off00007df2.bin
58fb148b733b2d656eaa05c5a3811e20388c0038bc29d84329220848de25e747
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF2 10100 bytes
font_02_sfnt_off0000a056.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA056 4324 bytes