Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2cb674236b997c2…

MALICIOUS

PDF

46.5 KB Created: 2020-08-31 14:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a8f2ec783b6d7872b9a6f1e59cef653 SHA-1: de3e8669522048b86b31542beac6499eb2dc536e SHA-256: a2cb674236b997c2df453dbee0cd1f289e6cd8a555f58a9967895834abc1cfef
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'ccleaner pro onhax' and a URL that appears to be a lure. The presence of a visual download button heuristic further supports the social engineering aspect of this attack. The primary malicious URL identified is ttraff.com.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ccleaner+pro++onhax
    • https://cdn.shopify.com/s/files/1/0433/8414/4037/files/great_is_thy_faithfulness_chords_c.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/case_study_of_marketing_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0919/files/ledexugobomogugofutimajus.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/avatar_film_720p.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/anorectal_malformation.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/rirav.pdf
    • https://cdn.shopify.com/s/files/1/0431/1721/5905/files/47097508278.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/business_analysis_courses_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/nocturnal_animals_movie_in_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/matlab_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/89918414026.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/bingo_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/7086/4037/files/papulewulubisamox.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_off00006d06.bin
52f447aea6e17ac12ff83b4d179d30c52c0cdf962ec416a86c8a32459bb12402
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D06 4592 bytes
font_01_sfnt_off00007c83.bin
1beadf26cfa5b7a8fe72850b53cf16babdd3b7249c33419bc42f4fd385f61660
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C83 10192 bytes
font_02_sfnt_off00009f52.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F52 4324 bytes