Malicious PDF — malware analysis report

Static analysis result for SHA-256 df80fb373aee5f0e…

MALICIOUS

PDF

41.3 KB Created: 2020-03-09 07:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 6a8a3f718f15151b9a16883bdff29c4e SHA-1: b2e1962296fd155d2af6e91b0b9ebdafb2b45371 SHA-256: df80fb373aee5f0e40e22e951d2b4af26bfa0384604046b381a51f25350cfe28
96 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 as a PDF SEO link farm. The document body text, while appearing to be about dog anxiety, is likely a lure to disguise the malicious intent of directing users to numerous unrelated websites. The primary goal appears to be SEO spam or potentially hosting malicious content on these linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://houseforsalellc.com/uploads/1/3/1/0/131070481/131070481.html#how+to+treat+separation+anxiety+in+dogs+naturally PDF link annotation
    • http://orca-edu-international.com/uploads/1/3/0/6/130604013/f4876a1f575.pdfIn PDF document text
    • http://cleanturndr.com/uploads/1/3/0/4/130435721/1bf22780.pdfIn PDF document text
    • http://www.choochooboutique.com/uploads/1/3/0/2/130270879/6576887.pdfIn PDF document text
    • http://helihamptons.com/uploads/1/3/0/5/130545627/2572687.pdfIn PDF document text
    • http://havensofmanhattan.com/uploads/1/3/0/5/130588503/jujuzerume.pdfIn PDF document text
    • http://bainversion.com/uploads/1/3/0/5/130590443/nonazojiw_jatupoju_sakevabej.pdfIn PDF document text
    • http://beemyhoneyapiary.com/uploads/1/3/0/6/130621918/kofuzo-nosuzed.pdfIn PDF document text
    • http://host35.carmichaelnl.com/uploads/1/3/0/2/130272569/tejizurodexorisepem.pdfIn PDF document text
    • http://www.angelspiritualwork.com/uploads/1/3/0/4/130478760/5237036.pdfIn PDF document text
    • http://democraticabsentee.com/uploads/1/3/0/6/130604972/katobib-tewowaluv-nawanigirupufok-rafusifevugo.pdfIn PDF document text
    • http://www.unctn.co/uploads/1/3/0/2/130289367/d971c2e380891f.pdfIn PDF document text
    • http://detroitfitclub.com/uploads/1/3/0/8/130814349/xilejafezunifolaf.pdfIn PDF document text
    • http://www.crossstream.org/uploads/1/3/0/5/130551704/naxaronis.pdfIn PDF document text
    • http://ainons.com/uploads/1/3/0/8/130814439/sawonofude.pdfIn PDF document text
    • http://alctj.le-prof.com/uploads/1/3/0/9/130969539/e35b74ee.pdfIn PDF document text
    • http://rollingstonetechltd.com/uploads/1/3/0/5/130542717/6593080.pdfIn PDF document text
    • http://tuktukyumyum.com/uploads/1/3/0/6/130603926/fb449e5852.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 8300 bytes
SHA-256: 76fc175d2b09509bbb37b6e32c932d1c7f3890536097cdcadc3837b30bf57d98