Malicious PDF — malware analysis report

Static analysis result for SHA-256 c344b54ed93daedb…

MALICIOUS

PDF

66.1 KB Created: 2020-08-10 12:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 601d7f5a127a6aeba008352e5c8b57b5 SHA-1: 4c244f4cae67008d04f6340e1f9392b83a34164b SHA-256: c344b54ed93daedbb9525c874e4524ef00d8b69cee00c66bd36434b268f117ec
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of numerous embedded URLs. The document body, though heavily obfuscated, contains text related to a book title and the malicious redirector URL, indicating a lure to download content. The primary malicious URL is https://ttraff.cc/pify?keyword=agatha+christie+and+then+there+was+none+pdf, which likely serves as the initial point of compromise.

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=agatha+christie+and+then+there+was+none+pdf
    • http://sutonad.grand-boats.co.uk/uploads/1/3/1/4/131407178/xazufepe.pdf
    • http://pexelor.marykentharrison.com/uploads/1/3/1/4/131438379/kapufuwovi.pdf
    • http://loladema.centralchurchtorquay.org/uploads/1/3/1/3/131398020/6265123.pdf
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/58773189252.pdf
    • https://cdn.shopify.com/s/files/1/0434/4840/2081/files/phonetic_transcription_in_theory_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/git_ignore_ds_store.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/pumibojeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/1725/5581/files/industrial_maintenance_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/nothing_but_the_blood_chords_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/89196645819.pdf
    • https://cdn.shopify.com/s/files/1/0436/8387/2921/files/skyrim_realistic_overhaul_sse.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/xubeporebojusobelaluwekiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4885/files/35407679878.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/42003182467.pdf
    • https://cdn.shopify.com/s/files/1/0437/3187/8049/files/malayalam_devotional_songs_lyrics_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/2005_toyota_corolla_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/bofasitejonuz.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_off0000c2cc.bin
363ba7c9085597575eedac7b0f1b386538d6de0d635e440cbd476b24bc560936
pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CC 5468 bytes
font_01_sfnt_off0000d577.bin
af6f24eaa77a8bdbee26d8eb270c18fbb213f359d4e1f9b673e6320db0767f85
pdf-font-stream PDF embedded font (sfnt) at offset 0xD577 11308 bytes