Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5270de2130c947d…

MALICIOUS

PDF

38.7 KB Created: 2020-05-15 11:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2a26c0b820b49c4b4d5b9d0572a0f1e SHA-1: 876ff58e32167382704a6e72f8d45775024121fb SHA-256: c5270de2130c947d9b6644c149547599a492fc6d71aae8c41a3f6f9b4f9155a5
92 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, containing numerous external URLs pointing to other PDF documents. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external link farm. The document body, though partially corrupted, contains references to the URLs, suggesting an attempt to drive traffic to these external resources, likely for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://tnpthenextphase.org/uploads/1/3/1/6/131636977/131636977.html#kalabhairava+ashtakam+in+telugu+video+free
    • http://metalslitter.com/uploads/1/3/0/4/130435737/dagitizik.pdf
    • http://paanlovers.com/uploads/1/3/1/4/131406537/3944466.pdf
    • http://borderarte.com/uploads/1/3/0/5/130590531/kasewobi_puzawafuworimug_mosumugaxotulur_lajeteri.pdf
    • http://ainsworthpottery.com/uploads/1/3/1/3/131384298/bitek.pdf
    • http://fueltechsupports.com/uploads/1/3/0/8/130873978/kenoseb_gawoxoso.pdf
    • http://hootnanniegame.com/uploads/1/3/0/4/130483772/rekolage_kezofomowug_sofalimun.pdf
    • http://wowlook.org/uploads/1/3/1/4/131437683/a85b87.pdf
    • http://cannabee.com/uploads/1/3/0/5/130539084/pabuwunasopedilu.pdf
    • http://healththroughsport.com/uploads/1/3/1/3/131379759/9882677.pdf
    • http://kuzhanov.org/uploads/1/3/0/7/130740015/5605036.pdf
    • http://advizey.com/uploads/1/3/0/6/130620556/5055503.pdf
    • http://onceuponmypillow.com/uploads/1/3/1/8/131856225/pitusu.pdf
    • http://blacksheepoptimists.com/uploads/1/3/0/5/130551754/goverosulurel-raxixe.pdf
    • http://thegivingpearl.org/uploads/1/3/0/6/130622104/fc7314e967.pdf
    • http://comerco4h.com/uploads/1/3/1/8/131871516/joliri.pdf
    • http://goodingfitnesscenter.com/uploads/1/3/0/4/130435930/vexudal.pdf
    • http://easyintegradora.com/uploads/1/3/0/7/130774993/pixofo.pdf
    • http://heinslpinc.com/uploads/1/3/0/7/130775589/6f50b990104505.pdf
    • http://istanbuldaytour.com/uploads/1/3/0/6/130621654/pulizam_julipufetijij.pdf
    • http://mauberretfx.com/uploads/1/3/0/5/130547024/257840.pdf
    • http://alphamaxtax.com/uploads/1/3/0/5/130550681/mifufuzopame.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_off00006c28.bin
47896f65a02c96eeede36d18bed8181299c543842e3069cec704e082ade712f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C28 10272 bytes

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