Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cd277f7d794212…

MALICIOUS

PDF

44.1 KB Created: 2020-08-09 15:17:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5031eab04a5902c6e451cc593aaf4e67 SHA-1: beb47f351dea9fa065e2d0b5b1c52f398b18297b SHA-256: c8cd277f7d7942128e31cafea038d5511ca5ea83b300130967ea7970f949e528
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bioethics+principles+issues+and+cases+3rd+edition+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for phishing or malware distribution. The presence of a link farm heuristic further supports the malicious intent by suggesting an attempt to manipulate search engine results or distribute links broadly. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a social engineering attack.

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=bioethics+principles+issues+and+cases+3rd+edition+pdf
    • http://kobifen.lmsdlutterworth.com/uploads/1/3/2/6/132681670/5148132.pdf
    • http://files.desirapesta.us/uploads/1/3/2/3/132302924/6318279.pdf
    • http://files.bmbmstevens.com/uploads/1/3/0/7/130775458/ruvebotuvolob.pdf
    • http://files.federfarm.com/uploads/1/3/1/6/131606289/3a503c291.pdf
    • http://files.religionsociety.net/uploads/1/3/1/4/131411688/kisaxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/5849/3600/files/pdf_mac_split_pages.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/microbiology_unknown_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0441/3338/4344/files/mb_publication_english_book_for_bank_clerk.pdf
    • https://cdn.shopify.com/s/files/1/0447/2792/6937/files/modern_biology_textbook_for_senior_secondary_school.pdf
    • https://cdn.shopify.com/s/files/1/0437/3856/2712/files/noxaweterimuxojuviluf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1535/files/mini_14_full_auto_conversion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/john_mayer_new_album.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/fusidekinolixod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/58921995806.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_off00005f32.bin
88a9188df8d756783d8f36a20d17e4b8b80a5d41699cbeed4bdf1592bdd06132
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F32 3928 bytes
font_01_sfnt_off00006d18.bin
f406a81bc85ffe9182a99de76a9056b8a16fba2f08043bb7a25210dae957007a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D18 5456 bytes
font_02_sfnt_off00007f9f.bin
c26f482f50c5a0ecb26e2882b23c3a213a39e006a27aab2c8be67c30fe2ff0a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9F 10308 bytes