Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fabf5e678d827d9…

MALICIOUS

PDF

47.4 KB Created: 2020-08-05 14:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 563e896e5a9d87c128b40be0f733ce87 SHA-1: a1544e138160c94be6e7f05e28b390dd67a685b2 SHA-256: 8fabf5e678d827d9f9e30950210f89b5030c394213e886020e3ab52d1d5673e1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link farm and a direct link to a redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'materi akuntansi keuangan kelas xii smk pdf' and the malicious URL, suggesting a lure for educational content. The primary malicious IOC is the redirector URL, which is known to lead to further malicious activity.

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=materi+akuntansi+keuangan+kelas+xii+smk+pdf
    • http://files.labednbreakfast.com/uploads/1/3/0/7/130738805/nugilixesafud_wuralevukinuvov.pdf
    • http://files.nemarkayaks.com/uploads/1/3/1/8/131856956/909224.pdf
    • http://files.cosmicportal.us/uploads/1/3/1/4/131484029/lisipojuwujekodevif.pdf
    • http://files.realtruekaren.com/uploads/1/3/0/7/130776272/wugopov-dokudu-vowedof-zazokaza.pdf
    • http://files.realtruekaren.com/up
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/jimik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/savitisat.pdf
    • https://cdn.shopify.com/s/files/1/0447/6128/4757/files/birth_asphyxia.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/kedijabasanojilovisasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/venebipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/69774731022.pdf
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/ebbudy_log_in.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/nenebeputojav.pdf
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/free_ford_escape_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/ralodej.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/88694137763.pdf
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/prentice_hall_chemistry_textbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/gre_analytical_writing_argument_topics.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/pasalomigupebugukijur.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_off00007a69.bin
569660196119f804ec44a21b315c1a35cee63f678966d244ac6c537a8bac860e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A69 5496 bytes
font_01_sfnt_off00008d1d.bin
3fb0b1d5e61dcaf013acfc7042b14926a8b74f9a25fe37cfa05fd97930e56f26
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1D 10368 bytes