Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d87e425d4befe1…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 14:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cd203645f739446a3aa747185e30b32 SHA-1: c072c1e3e8eb2aeed8529c38da7ab0eb6066ebd6 SHA-256: 33d87e425d4befe1bd65693a293a6a4542024d5c1ae5c81c593fa349099480d1
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.com'. This indicates a phishing or malicious redirection attempt, disguised as a document about picking exercises. No scripts were extracted, but the extensive link farm 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.com/pify?keyword=alternate+picking+exercises+pdf
    • http://files.raesandwaves.com/uploads/1/3/1/3/131379353/rufunixaposememodo.pdf
    • http://files.southmadisonunite.org/uploads/1/3/0/7/130775025/gonowojuril_lalaz_zavapirebiz.pdf
    • http://files.boardroomdevelopment.com/uploads/1/3/0/8/130874063/mobopinefado_gonevupigozumu_vixoriga_nejeroziseso.pdf
    • http://files.ithinkpet.com/uploads/1/3/1/6/131636995/08a64be3c07f.pdf
    • http://files.livefreeandfarm.com/uploads/1/3/1/4/131406544/2adfb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1580/files/lizezotuwaxutega.pdf
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/37420346672.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0023/files/wekisosizomepibagutivasen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/tefiravimobitus.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/bijilogavuvip.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/30266477361.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/74948023261.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/vanodoj.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_off00006a9d.bin
fb20344346386486a0d4dbc4c213086b1508b4850281fb71a6e4ca4cfbc77808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 5444 bytes
font_01_sfnt_off00007d2a.bin
c9807926d24041018528264d6c1a2fa4c1ee170499498b8e50485d0abb723a03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 10612 bytes

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