Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d8bb783308ac31…

MALICIOUS

PDF

44.5 KB Created: 2020-08-12 06:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930a420010baaba47588d4a71786579f SHA-1: c3aa11483d759fa1dc79ae2f236e7bb7758a81e6 SHA-256: 93d8bb783308ac311e74a9d81e2afa05b5b70b421d6f1b1998a74e832b3a1a4f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=anomalous+expansion+of+water+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=anomalous+expansion+of+water+pdf
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdf
    • http://zitifimal.apologeticsinthechurch.com/uploads/1/3/1/3/131379552/6385640.pdf
    • http://bisek.ashwins.co.uk/uploads/1/3/0/9/130969723/situvuxawev_dotarimomikum_batovu.pdf
    • http://pumuwo.monicaleekennedy.com/uploads/1/3/1/4/131453215/mazokakutuz-lunipuruganuxak-lusidupo.pdf
    • http://files.milkywayfarm.net/uploads/1/3/0/8/130813357/vigaxeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/sozenap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/vuwudugenojizofufoke.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/zepaludizapamabenafi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/psicologia_anormal_libro.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/gelurax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9632/files/masemabivemagazuseromex.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/29663318375.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/human_hereditary_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/tutijozuwaloxowibebux.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/carrier_weathermaker_9200.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b76.bin
e8bf5099e06fd0b6df4d1c49f6c662a66bc80cd684dcfaaf1c3324965eaf077a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B76 5336 bytes
font_01_sfnt_off00006d95.bin
35f02c03e7248ab97cc773f564011938ff16715b69b7c5d3462f37eeac399786
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 10076 bytes
font_02_sfnt_off00009001.bin
7b61b80ad9eae8da687db589656cc14036b78b470666db3a00a61726a6371a4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9001 16088 bytes