Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b7c5dee317be8a…

MALICIOUS

PDF

54.2 KB Created: 2020-03-30 06:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7b5949cd7cdab9dc53433d4965983722 SHA-1: 8f6df42319dad54622f9cab2cb114a8cb40f8cc6 SHA-256: 42b7c5dee317be8a5f81215564368bc200543fe092e4dc06b45233cc6db48752
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary external URI points to 'http://asociacionperiodistaspr.org/uploads/1/3/0/5/130589131/130589131.html#icd+10+code+cervicalgia+with+radiculopathy'. This suggests a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious or deceptive content hosted on numerous domains. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://asociacionperiodistaspr.org/uploads/1/3/0/5/130589131/130589131.html#icd+10+code+cervicalgia+with+radiculopathy
    • http://granikka.com/uploads/1/3/0/7/130738979/2787492.pdf
    • http://myukpensiontransfer.com.au/uploads/1/3/1/0/131070044/6016a8.pdf
    • http://eppsandviel.com/uploads/1/3/1/3/131398428/ac86a83ddba2.pdf
    • http://atlanticseaburials.com/uploads/1/3/0/4/130477702/3570877.pdf
    • http://busybsartistry.com/uploads/1/3/0/5/130588773/2399231.pdf
    • http://folsomkickboxing.com/uploads/1/3/0/8/130873899/fomejipex.pdf
    • http://kimmykakesco.com/uploads/1/3/0/5/130546486/3307881.pdf
    • http://rockingtheboat.net/uploads/1/3/0/4/130436222/pifezodagepono.pdf
    • http://lenapegirlssoocer.com/uploads/1/3/0/7/130739538/7ea8c1aefb59.pdf
    • http://instituteb.com/uploads/1/3/0/4/130436033/fevuzivalelo_ledawojosilado.pdf
    • http://grupovitlan.com/uploads/1/3/0/4/130476205/lojut_kajajopapazoze_zuralunukab_wenifuxog.pdf
    • http://www.hiddenkindness.org/uploads/1/3/0/5/130588268/ruletadizotono.pdf
    • http://ladygirlcustom.net/uploads/1/3/0/4/130491181/zowudolazajujorozixo.pdf
    • http://aobassociates.com/uploads/1/3/1/1/131164322/jigakeleg.pdf
    • http://lashedbyphoenix.com/uploads/1/3/0/8/130814594/b1b60f44fa818a0.pdf
    • http://jamielatashailluminated.com/uploads/1/3/1/3/131383646/76b75c099220b90.pdf
    • http://jcpdrywallllc.com/uploads/1/3/1/3/131382030/nuwexaxo.pdf
    • http://endorsedbyheaven.com/uploads/1/3/0/6/130640139/gufafowuga_megawawarikuwod.pdf
    • http://myteamstrong.com/uploads/1/3/1/1/131163747/bagolulinol.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac77.bin
38f1b9fa69be27fdde8c26c0c4408c71e48fc17c508e98f562f914cacb7a8ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC77 7680 bytes

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