Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd5c04f8d71781a…

MALICIOUS

PDF

48.6 KB Created: 2020-03-28 05:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: f3414449444e0c7a5b2e7ad660d3d5eb SHA-1: 906e9d5166a704a9459db5a736beedaefb49a46b SHA-256: 8cd5c04f8d71781af7cf62466fb40251b09d59bcf9d9eb9a9834bb192f98bf29
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body also contains a prominent link to 'thesweetmission.com'. This suggests a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine ranking for malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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://thesweetmission.com/uploads/1/3/0/2/130270826/130270826.html#10+ejemplos+de+pronombres+personales+en+plural PDF link annotation
    • http://michaelpachelo.com/uploads/1/3/0/7/130775033/gamunumazefekeg.pdfIn PDF document text
    • http://theskinpa.com/uploads/1/3/0/6/130604220/835644.pdfIn PDF document text
    • http://mattresshookup.com/uploads/1/3/0/4/130488365/2484154.pdfIn PDF document text
    • http://mikkiscreations.shop/uploads/1/3/0/4/130489229/panimomofar.pdfIn PDF document text
    • http://waybackwrestling.com/uploads/1/3/1/3/131378837/difisemuvekuza.pdfIn PDF document text
    • http://en.pargi20a.com/uploads/1/3/0/5/130588843/kemanupopab.pdfIn PDF document text
    • http://typerhobbies.ca/uploads/1/3/0/7/130738650/ddd7aa608eac17.pdfIn PDF document text
    • http://www.ariellejochum.com/uploads/1/3/0/5/130543383/4246800.pdfIn PDF document text
    • http://sptbgautorepairpros.com/uploads/1/3/0/6/130605381/ninerepamova-lixabulupija.pdfIn PDF document text
    • http://smoothgentlemen.com/uploads/1/3/0/2/130289201/a3491e2.pdfIn PDF document text
    • http://www.stressadvantage.com/uploads/1/3/0/6/130639143/9430120.pdfIn PDF document text
    • http://www.cahabariverdesigns.com/uploads/1/3/0/4/130435960/sibir.pdfIn PDF document text
    • http://jessicalink.com/uploads/1/3/0/3/130379769/davipekevoxipu_nabuwarojo_mopadudaku.pdfIn PDF document text
    • http://ancientflyingmachine.com/uploads/1/3/0/5/130590741/safemifosu.pdfIn PDF document text
    • http://classictactics.com/uploads/1/3/0/4/130488195/robudenemoz.pdfIn PDF document text
    • http://www.millermiller.info/uploads/1/3/0/8/130814355/ruwexogamabu_volanuxavul.pdfIn PDF document text
    • http://millbayshoresbandb.com/uploads/1/3/0/8/130814967/kakoxalu_gizigaxe_zirikiza.pdfIn PDF document text
    • http://laboroflovefestival.org/uploads/1/3/0/4/130478123/soxizapi.pdfIn PDF document text
    • http://www.igclegal.com/uploads/1/3/0/9/130969329/969b86c.pdfIn PDF document text
    • http://mactree.ca/uploads/1/3/0/6/130621228/5306206.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: mikkiscreations.shop 4 samples

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF8 8976 bytes
SHA-256: 05faf6c3f3a00db366cfd08c532839a3b4d30a23c89fbb03644f99fac00922d2
font_01_sfnt_off00009d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9E 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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