Malicious PDF — malware analysis report

Static analysis result for SHA-256 545ba9464c726430…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 06:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9472447b56b617b16bc7ab8d4289f599 SHA-1: 45f894e8508db3d84d6769ad4bcbc6e5f3908ea0 SHA-256: 545ba9464c7264304341ebd2b49673ac173ac823a45da257589ddaf36b5ce7ec
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Ibps bank exam books pdf free download' and the malicious URL, indicating a lure to download potentially harmful content. The presence of numerous external PDF links further supports the SEO poisoning and redirection attack pattern.

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=ibps+bank+exam+books+pdf+free+download
    • http://files.cbavelles.com/uploads/1/3/1/4/131453588/nifelepifotipumob.pdf
    • http://files.sallykral.com/uploads/1/3/1/3/131383754/rilikos.pdf
    • http://files.cruisencocktails.com/uploads/1/3/0/7/130775331/7216272.pdf
    • http://files.ftrs.ca/uploads/1/3/0/8/130874359/2211514.pdf
    • http://vedew.stmatthewsvoorheesville.org/uploads/1/3/1/3/131383314/7704559.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/45029787058.pdf
    • https://cdn.shopify.com/s/files/1/0429/2771/8567/files/wepakikijikew.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/37001384244.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/xefugulake.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/jufefazimejifarux.pdf
    • https://cdn.shopify.com/s/files/1/0428/3102/0198/files/81184114995.pdf
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/watch_suicide_squad_online_free_vodlocker.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/48729580905.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/68540485543.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/19866173494.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/sun_l_atvs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/asus_rt-_n66u.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/sudapapuma.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kusofo.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_off00006115.bin
20bd79b9b3d4060ccf2046012d9190d52d964c31dbd21de23d2f405ea11bc906
pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 5488 bytes
font_01_sfnt_off000073bb.bin
0f7bb7d9a1f51785e4c98366012468dc5de8c65efc91b2832b2a596c262460c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x73BB 10380 bytes