Malicious PDF — malware analysis report

Static analysis result for SHA-256 999309bd1982574f…

MALICIOUS

PDF

44.8 KB Created: 2020-08-10 19:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63febece543eb52be0ead1a84980721e SHA-1: 02eadf75db69c5c973da3b93e640aa5fc85787de SHA-256: 999309bd1982574f34e5b91d1f0f04b462563ac783ad87186cd4b99403d6106a
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 PDFs hosted on Shopify. One of the primary links redirects through 'ttraff.cc', a known malicious redirector, using a lure of a 'balanced diet chart pdf'. This suggests a phishing or scam attempt to redirect users to malicious content. 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.cc/pify?keyword=balanced+diet+chart+pdf
    • http://files.dinkidimainecoons.net/uploads/1/3/0/7/130740442/7077561.pdf
    • http://sodupig.bayareabreastfeedingsupport.com/uploads/1/3/0/8/130814411/1f4af5a2567d9.pdf
    • http://files.dhub09.com/uploads/1/3/2/6/132696030/98268b8a9a31.pdf
    • http://files.kimcarmona.com/uploads/1/3/0/7/130776484/murejonidib-judumemosiz-xiwubexitot-zopudavi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/volalej.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/48702210477.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/dofuso.pdf
    • https://cdn.shopify.com/s/files/1/0440/8197/1365/files/equations_of_state_for_fluids_and_fluid_mixtures.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/domodapugekopag.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5850/files/xujimizaboluwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/concierto_de_aranjuez_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/lelusopoxinotol.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/lugowobitowu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/lexidux.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/rilufabukenanujejukepi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8843/5613/files/6068693498.pdf
    • https://cdn.shopify.com/s/files/1/0437/6238/5045/files/47708050260.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_off0000725b.bin
7b642afbe77f4f8dd5056f367051b837c25b8d027faea187f13d9bb2ae316e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 5116 bytes
font_01_sfnt_off000083ad.bin
559e2756d34a09182ea970fa8829898ce3b50ab7fb3ae6c1d80100df99e40e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AD 10164 bytes

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