Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc0775089d5fc15…

MALICIOUS

PDF

52.0 KB Created: 2020-08-12 02:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c4c20d91e6ec5ac1f04d5e8e2e69c0 SHA-1: caf9a695d8473c3350c60b5be8554e35c9e2e32a SHA-256: 4bc0775089d5fc15cd75f8e53602f0e6288634d7e9bfb5dca7288c4daed1cba8
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate content, but the primary link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests a phishing or scam attempt using a deceptive document.

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.ru/pify?keyword=basic+english+grammar+exercises+for+beginners+pdf
    • http://sitimot.rachelmambach.com/uploads/1/3/0/7/130775403/goluz-nuxenamures-waxit.pdf
    • http://files.newmapsoftheoldwest.com/uploads/1/3/0/7/130775032/nopamusoku_bisova_domewewofu.pdf
    • http://files.leadingyouhome.org/uploads/1/3/0/7/130738970/8456538.pdf
    • http://fulof.canmoreforestplay.com/uploads/1/3/0/7/130738970/978947.pdf
    • http://files.soulelectricliving.com/uploads/1/3/1/4/131453985/miroweb.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/jepopuxoxopexirilo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/bharathiar_kavidhaigal_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/jojisekediletelafumod.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/milupigerosopogafomisoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/rarafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/ncert_class_9_science_atoms_and_molecules.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/76438189496.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/carlill_v_carbolic_smoke_ball_company.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/83465274555.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/advanced_mathematical_concepts_precalculus_with_applications_student_edition.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df1.bin
3bf9b1db4f9b48d34f2f353df2d342bd92bbfe95b631326846b4471447d14cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF1 5536 bytes
font_01_sfnt_off00007075.bin
cd008f8d50b352213f06ba1f4b1b071cd966d7a6c71acff1aeabc275819a8311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7075 1832 bytes
font_02_sfnt_off00007952.bin
9ec2fe0121c5872b490ea56b1aebae454f3ad52ab22c7bf20f8c7b92e30b2595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7952 10412 bytes
font_03_sfnt_off00009d07.bin
bf0029f2f65a8d03fc5bc6dac3f89872448ee76276b38fcd79a4881ba082e330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D07 16508 bytes
font_04_sfnt_off0000b370.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB370 4324 bytes

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