Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8ac691a10a341a…

MALICIOUS

PDF

40.8 KB Created: 2020-08-11 22:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e9069a512d403e02e13546a5ab384ed SHA-1: dc2c5d52ece969ea5aa387a339231a87bae3f9ac SHA-256: ee8ac691a10a341a6744e1475c2e1625d5566f7c6ff744153f6a10d5fa92dea7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=topographic+map+worksheet+pdf', suggesting a lure to disguise malicious activity. The primary attack pattern involves redirecting the user to malicious infrastructure via a link farm.

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=topographic+map+worksheet+pdf
    • http://mubadom.beyondthebaize.com/uploads/1/3/1/8/131872055/1945bf7b2cc20b.pdf
    • http://files.detoncho.com/uploads/1/3/0/8/130874369/e680ca12b248.pdf
    • http://files.mcbaronfootball.com/uploads/1/3/0/7/130738639/fapejigozujat_fasilosix_gebuf_potasu.pdf
    • http://files.techniquejobs.com/uploads/1/3/1/4/131406816/2390231.pdf
    • http://files.brooksidepineriver.com/uploads/1/3/2/8/132814415/e9eb96e8f70431a.pdf
    • https://cdn.shopify.com/s/files/1/0432/6257/4750/files/bolupakafiros.pdf
    • https://cdn.shopify.com/s/files/1/0429/1290/7427/files/molasodeved.pdf
    • https://cdn.shopify.com/s/files/1/0445/2987/7151/files/michael_swan_practical_english_usage_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/0438/7750/files/libros_de_arqueologia_mexicana.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/litoxaluvotawesa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/vixaxexozif.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/4617817646.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/nagusamil.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_off00006109.bin
ec663fb39425f1e042b22456f0524ef95b0c64e1940b71a00485883f5ba7f276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6109 5644 bytes
font_01_sfnt_off00007427.bin
313d612e157f5292eed2761a5249a630b8ca65b52e85aef2d4a64b47bc0ebe7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7427 10108 bytes

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