Malicious PDF — malware analysis report

Static analysis result for SHA-256 37060cf04039b4c3…

MALICIOUS

PDF

39.6 KB Created: 2020-07-30 22:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66a184f7bea8d5fe6b19c92ba994e70c SHA-1: 33d1a02581427aaec54a8b8af74764ce10a5fe0c SHA-256: 37060cf04039b4c389ca1970707c6fce8d1bc077724b3943b533c78d51146e60
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=learn+python+3+the+hard+way+pdf+2020', which is likely used to funnel victims to further malicious sites. The document body, though heavily obfuscated, suggests a lure related to Python programming books.

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=learn+python+3+the+hard+way+pdf+2020
    • http://files.spiritmountainroasting.com/uploads/1/3/2/6/132695828/fojuvobezufogab.pdf
    • http://files.glassmanneuropsychology.com/uploads/1/3/0/7/130775126/2563537.pdf
    • http://files.ckemployeeportal.com/uploads/1/3/1/3/131383943/4276487.pdf
    • http://files.oakleafenergy.com/uploads/1/3/0/9/130969761/juvatagovamuneworapa.pdf
    • http://files.oakleafenergy.com/
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/73956248170.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/folajas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/76369342882.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/robisujegamifowor.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/labasuzupukonilim.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/87457179811.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/20734034623.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/lodofizir.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/belidifubizobozuxanivax.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/gomazumojusapakafapur.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/susokeja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/jenibugofowij.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_off00005df4.bin
ffba1e7c114f5898b9f6975411f80d743d7eacf6ff46fc90f067cbad51f924af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF4 5232 bytes
font_01_sfnt_off00006fcb.bin
fc1c10ce438328eda2ece826edbfd64e95762f0264d0b5b94b5650278e1b0b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 9796 bytes

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