Malicious PDF — malware analysis report

Static analysis result for SHA-256 535a5a78f8000778…

MALICIOUS

PDF

54.5 KB Created: 2020-08-14 01:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 677f0beef1218fbe211947f873bafa4f SHA-1: d329a34322f3e89151f9bd56a62d7410019a3acf SHA-256: 535a5a78f8000778781ce8f6a950ea7e057e5a79942d98797df2ef1a2837bd72
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, with the primary malicious URL being ttraff.com. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role in directing 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.com/pify?keyword=arpan+songs+free
    • http://files.lifeeclectic.net/uploads/1/3/0/8/130813511/1f5c330c4222.pdf
    • http://files.chrisspaight.com/uploads/1/3/2/3/132303238/padeva.pdf
    • http://files.arborcovetherapy.com/uploads/1/3/0/9/130969984/vikunipazavirer.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/free_printable_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/5111675205.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikodizexosuva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/favozufudizodafepatabowij.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7268/files/tunemetulejilabikigubosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/10th_english_synonyms_and_antonyms_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2785/files/44781518308.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4506/files/dynamic_meteorology.pdf
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/2020_nascar_cup_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/92396227731.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/briggs_and_stratton_engine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4048/files/pupad.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_off000082bd.bin
760a78eb4c5e5c5a33ca548d5b4dd170f151586fe491ae5c00f72d1c8ece4453
pdf-font-stream PDF embedded font (sfnt) at offset 0x82BD 4688 bytes
font_01_sfnt_off000092a3.bin
a485a092c5c853ebaca4c4a9720a6f388ee6b638a6d7434e7cd357a56c39c4ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x92A3 14356 bytes
font_02_sfnt_off0000bf97.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF97 4324 bytes