Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d2aab1017e41e3…

MALICIOUS

PDF

43.3 KB Created: 2020-09-01 14:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859b260f5dca0ade9be081e98b9cef83 SHA-1: f8ddd1d608a79594cb2c0c3c793b3bcb07f4f5ba SHA-256: a5d2aab1017e41e3b378d75953715a700fac5af9e55157d3eebd5f58060b5915
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a prominent link to a known malicious redirector, ttraff.com. The document body, though partially corrupted, contains text suggesting a lure for a 'pdf file editor free windows 10'. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating a social engineering attempt to drive traffic to malicious infrastructure.

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/wix?keyword=pdf+file+editor+free++windows+10
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/fuxix.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/jokomiwavajorolifamanulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0460/0535/4657/files/apk_anonytun_achi_terbaru.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/70717212894.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/talotorenupusazepoluguful.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/european_journal_of_medical_genetics_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/6041/9989/files/acid_bases_and_ph_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/endless_escape_level_33.pdf
    • https://cdn.shopify.com/s/files/1/0437/3482/7162/files/bohemian_rhapsody_piano_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/wheel_of_time_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/6823/3630/files/coraggio_ben_mio_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/bella_italia_dessert_menu_prices.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/83361354160.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/acrobat_reader_download_offline.pdf
    • https://cdn.shopify.com/s/files/1/0454/7267/8054/files/mupurinagegirojinufeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/3762/1404/files/98081713315.pdf
    • https://cdn.shopify.com/s/files/1/0463/2389/2381/files/vizudaxudojafikezoziwopal.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/
    • https://cdn.shopify.com/s/files/1/0434

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ae4.bin
d17c126aaa498918825f5f863160ca8838a8b9f63c454d515b4c30f01fb38e29
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE4 4980 bytes
font_01_sfnt_off00007bff.bin
c496ce6f05b94bcce927385bd6ee7a456efbd0d3534946c6bf3e3a4a58a7d317
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFF 10560 bytes