Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02512ef1f690e20…

MALICIOUS

PDF

34.6 KB Created: 2020-04-24 22:30:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3cb5ac656153be386b135fb96b67a1ca SHA-1: f1f97537219a2ef5d9fde950b845f55d691ca024 SHA-256: a02512ef1f690e20009c87f22a1968fa8112df4e676105c08f7855384160ec35
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though partially corrupted, includes a reference to 'Mcgraw hill connect answers us history', suggesting a lure to attract users seeking specific information. The primary heuristic indicates a PDF link farm, designed to distribute traffic across numerous external URLs.

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://mindforyou.org/uploads/1/3/0/4/130476288/130476288.html#mcgraw+hill+connect+answers+us+history
    • http://warmheartwarmhandsbirth.com/uploads/1/3/0/7/130739210/e8252.pdf
    • http://algonaccasting.com/uploads/1/3/0/7/130775726/wogida-wijaret.pdf
    • http://enthusiasmdiaries.com/uploads/1/3/0/3/130313299/mudurakojobur.pdf
    • http://monicargonzalez.com/uploads/1/3/1/3/131381693/levatovabopo-gavaxewuf-tomukosejaribav-befofo.pdf
    • http://dcclean.net/uploads/1/3/0/5/130589391/050fd6.pdf
    • http://pacificexpressfreight.com/uploads/1/3/0/8/130814729/zugaxanamedagem-mabemubefew-legemazaxiwaxi.pdf
    • http://schenectadyquest.org/uploads/1/3/0/7/130775172/46ab5e9446f670.pdf
    • http://noralpha.com/uploads/1/3/1/4/131453706/845c9ea7312.pdf
    • http://lifehouseremodeling.com/uploads/1/3/0/6/130604287/7870600.pdf
    • http://nolimitsorboundaries.com/uploads/1/3/1/6/131606807/88b6f62.pdf
    • http://elektrowhatts.com/uploads/1/3/1/0/131070420/eeaecfcbeb659e.pdf
    • http://elektrowhatts.com/uploads/1/3/1/0/131
    • 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_off00005dc2.bin
51ac9c9b59735d583bafd2d2e741849274c7e6c846589f85e078de13cf157000		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC2 8472 bytes

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