Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48ba45659f59eb1…

MALICIOUS

PDF

60.2 KB Created: 2020-08-08 08:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f2f4a21a07c732f85659fbe14b8eedf SHA-1: fb6f7c88602cc920effe248f42a1fdaeda5e1070 SHA-256: e48ba45659f59eb11ba7bef8a7b07b35317f2501a4324ae7a97c571f0766bd7d
128 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bookkeeping controls pdf' and includes the malicious URL. This suggests a phishing attempt to lure users to a malicious site under the guise of a financial document.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wb?keyword=bookkeeping%20controls%20pdf
    • http://files.peterbixbynhhouse.org/uploads/1/3/1/4/131453065/nijoxisigizu-jaromevofanab-tijufejewuwuxo.pdf
    • http://files.centraljerseydyslexialearning.com/uploads/1/3/0/7/130740571/porunulegatapeji.pdf
    • http://files.fcoca.org.uk/uploads/1/3/1/6/131606000/2210662.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/xasuvu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/24933999771.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruxejuvekega.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/gakisuzegalonaje.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/debak.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/pattern_magic_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/14595562304.pdf
    • https://cdn.shopify.com/s/files/1/0454/4820/0342/files/iupac_nomenclature_of_inorganic_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0434/6377/0272/files/44130979380.pdf
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/befugotekakajigok.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/gidudagekidujokuwosovo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/86658060923.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_off0000afc8.bin
b4b97172d200fbd8c17ff76be2d97b2a439a31ca61515c17bb030652932fef32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC8 5224 bytes
font_01_sfnt_off0000c1b2.bin
377c3f1e4c199bce67bf347966658f6cc0b1199b34a42b639dc9e7bc6b06e967		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B2 10124 bytes

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