Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5047eb39b115a10…

MALICIOUS

PDF

59.8 KB Created: 2020-08-12 12:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ef914bca586fd639d670b8a082c0bc SHA-1: 56ee6864d78dfba054b7e44a787e2d22639c776e SHA-256: b5047eb39b115a10f950d4d1a52e9d038c904bcb4246360bea300afbc23080c8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=alfabeti+dad+visual+pdf', which is flagged as a malicious redirector. This suggests the primary goal is to redirect the user 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.cc/pify?keyword=alfabeti+dad+visual+pdf
    • http://files.neighborhoodacupuncture.com/uploads/1/3/1/4/131437676/8135904.pdf
    • http://zadeda.ostrichhole.org/uploads/1/3/2/6/132681488/lawoganipufuwafo.pdf
    • http://files.arrantsmcswain.com/uploads/1/3/1/4/131407535/nafisawase.pdf
    • http://files.michellesjohnson.com/uploads/1/3/2/6/132695546/6366908.pdf
    • https://cdn.shopify.com/s/files/1/0436/7722/1017/files/99314280285.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/14136609570.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3586/files/nkjv_word_study_bible.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/95877676334.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/72345096390.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/mopib.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/tenika.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/kakesuwebidagilububaviv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/zamufok.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7204/files/samir_aouchiche.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/mezavuladuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/lawoxepazarapatuwipinud.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_off0000add3.bin
986a6b24edf8d0b4d73d215a6bb2a88b0c629695d11c0da951553e34a06e2e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADD3 5128 bytes
font_01_sfnt_off0000bf60.bin
5c9a6869366696606847721701e1f836655757dc5b1f85a9960aa77fc4398c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF60 10272 bytes

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