Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48fb850dae3b9b0…

MALICIOUS

PDF

99.8 KB Created: 2020-07-31 19:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d87e5bbf72063a424d183f5e9bc0c52 SHA-1: 36006e6d4becedc7ba89b43d410beb9d79b112e9 SHA-256: d48fb850dae3b9b016469eeb413306d2622d59c1e9ee35c8ac0c4286e3dff3c0
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lead users to scam content. The document body, though heavily obfuscated, contains text related to 'O reilly books pdf' and the URL itself suggests a lure related to book downloads. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates a phishing attempt based on prize or parcel delivery language. No scripts were extracted from this sample.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=o+reilly+books+pdf
    • http://files.zphibmuzeta.org/uploads/1/3/1/8/131856636/fimogare-ketatotaja-jowijawukolakof.pdf
    • http://files.kobrass.com/uploads/1/3/0/7/130738568/ce6d7bf87e5.pdf
    • http://files.valeriaflorescano.net/uploads/1/3/0/7/130739831/jixebofudedusajisa.pdf
    • http://files.pioneerframeworks.com/uploads/1/3/2/7/132740595/450990939.pdf
    • http://files.lemonaidfund.org/uploads/1/3/1/4/131454850/8933040.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/dukowitutunodavajexuxoxoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/0642/5249/files/rupiletivetawajuwigomobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/48092316717.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/wiponiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/gifarironi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gibowutobarifokegibig.pdf
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/deramo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/xiredinuvivutin.pdf
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/75383269787.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/75830114582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://lifehacker.ru/2017/01/09/free-oreilly-ebooks
    • 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_off0001282e.bin
b6b435a0f2323e01a9518b915b17c4f89f6343f41d2812e864fcbc7cab1f48f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1282E 5156 bytes
font_01_sfnt_off000139c9.bin
ef28bd6620851e0adfaca7fd1c831b9c04ab2271554fce30efe1c7dd5f6922f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x139C9 16300 bytes
font_02_sfnt_off00016c40.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0x16C40 16204 bytes