Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19fdf4be74718f8…

MALICIOUS

PDF

47.9 KB Created: 2020-03-15 13:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 942e8a0a794fa9cf89d2711e398271b9 SHA-1: 9381526ca99dde681baf71ea35e6e96580801eee SHA-256: c19fdf4be74718f8c09c4d64112aa297767f510433034053ce8b3ce213dea986
96 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body mentions 'Parquet file format pros and cons', likely a lure to encourage clicks on the numerous embedded URLs. No scripts were extracted, and the primary malicious activity appears to be the distribution of links to potentially harmful content hosted on various 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://inwardvision.com/uploads/1/3/0/4/130483368/130483368.html#parquet+file+format+pros+and+cons PDF link annotation
    • http://mclennanfarms.com/uploads/1/3/0/3/130379503/gosumisujepis-vopez.pdfIn PDF document text
    • http://free-fax-service.anyball.info/uploads/1/3/0/5/130544751/lanipedolodevumofo.pdfIn PDF document text
    • http://wickedporch.com/uploads/1/3/1/0/131070027/2e6fa85eef123.pdfIn PDF document text
    • http://gratefulvet.com/uploads/1/3/0/7/130776645/tofuximumef_jumemireki_xuvosunixeki_venidebozo.pdfIn PDF document text
    • http://myempoweringyouth.com/uploads/1/3/0/6/130621303/palubinaz.pdfIn PDF document text
    • http://aliveyouthmebc.com/uploads/1/3/0/3/130379138/nosasodagibuguzoba.pdfIn PDF document text
    • http://www.ipsma.info/uploads/1/3/0/4/130489536/e94ce340d.pdfIn PDF document text
    • http://vivaescapes.com/uploads/1/3/0/8/130874318/xunugofaw.pdfIn PDF document text
    • http://eastcorkpayroll.ie/uploads/1/3/0/5/130546971/sanuwiziweguwu-daditudaj-manasenomiz.pdfIn PDF document text
    • http://hasbropowerrangers.com/uploads/1/3/0/4/130483329/gosumin.pdfIn PDF document text
    • http://jenreidphotoart.com/uploads/1/3/0/7/130740158/kemaminopove_xuwebisal_binoxevewiz_gafak.pdfIn PDF document text
    • http://styleforlower.com/uploads/1/3/0/4/130435757/2063858.pdfIn PDF document text
    • http://gallaghersculpture.com/uploads/1/3/0/4/130490218/ledilewojowujog.pdfIn PDF document text
    • http://vnunitedfc.org/uploads/1/3/0/9/130969850/9469173.pdfIn PDF document text
    • http://cairnscloudsolutions.com/uploads/1/3/0/6/130604764/sazuw.pdfIn PDF document text
    • http://moosetracksmi.com/uploads/1/3/0/6/130639573/fapilomu.pdfIn PDF document text
    • http://experiencemeaning.com/uploads/1/3/0/2/130289485/6838331.pdfIn PDF document text
    • http://moonlightplanners.com/uploads/1/3/0/6/130620313/wonofasa-loxurilumap.pdfIn PDF document text
    • http://manetaspark.net/uploads/1/3/1/0/131070493/c0ead140b5c5136.pdfIn PDF document text
    • http://anewhumanity.org/uploads/1/3/0/7/130739333/kuzusoson.pdfIn PDF document text
    • http://ns1.xmobilepro.net/uploads/1/3/0/5/130543684/putajibagomara_wedavutat.pdfIn PDF document text
    • http://karrinheappey.com/uploads/1/3/0/4/130483417/roziziv.pdfIn PDF document text
    • http://myssample.com/uploads/1/3/0/6/130620926/bafupenur.pdfIn PDF document text
    • http://iusedtobetechnical.com/uploads/1/3/0/6/130639622/666af32.pdfIn PDF document text
    • http://a-custom-esl-tutoring.com/uploads/1/3/0/7/130739917/nedarokoboxibin-zugejituxudeboz-gogutexaveduto.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000905b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x905B 8792 bytes
SHA-256: e21a8d7df1a87a0ae197f045f2a44f3111ed12a2a8f676f0f82b8f24c7311d85

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