Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e0dc2d380703ae…

MALICIOUS

PDF

40.4 KB Created: 2020-03-22 01:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 8a65eff22083470c7e10215e0b940407 SHA-1: aeed7e3a335312a3db772015c70114a206af7408 SHA-256: e7e0dc2d380703aef3ef1e158299828e17222c9dd808bc1aa849a21f4684c654
136 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to a critical heuristic firing for a link farm, containing 30 external links. The document body, though heavily obfuscated, contains references to several URLs, including the primary one identified by the PDF_URI heuristic. These links likely serve as lures to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://terracottagardens.org/uploads/1/3/0/2/130272569/130272569.html#milan+kundera+slowness PDF link annotation
    • http://mta-sts.mx.firstloveradio.org/uploads/1/3/0/5/130540493/desiwenufigaf.pdfIn PDF document text
    • http://relaxzen-artlessons.com/uploads/1/3/0/4/130476471/44a2fc9ff46e05.pdfIn PDF document text
    • http://www.eminentshepherds.com/uploads/1/3/0/5/130589229/ba0e63276c75f76.pdfIn PDF document text
    • http://bamfieldmercantile.com/uploads/1/3/0/4/130477492/8adfe4c8579668.pdfIn PDF document text
    • http://mybiohelp.com/uploads/1/3/0/7/130775605/9061509.pdfIn PDF document text
    • http://host243.carmichaelnl.com/uploads/1/3/0/6/130604892/8d0368a480.pdfIn PDF document text
    • http://mta-sts.mx.clevelandhousepainters.com/uploads/1/3/0/7/130739328/jizabas-supok-xukatowopuzij-tuweximisa.pdfIn PDF document text
    • http://elianaserato.com/uploads/1/3/0/7/130738796/fovina.pdfIn PDF document text
    • http://meetelizabethanderson.com/uploads/1/3/0/6/130620614/pasovupodalilawaja.pdfIn PDF document text
    • http://donsmarketemmett.com/uploads/1/3/0/2/130287943/4948924.pdfIn PDF document text
    • http://themasticmen.com/uploads/1/3/0/6/130605406/52213a7814f7d.pdfIn PDF document text
    • http://sandiegoeatingdisordertherapist.com/uploads/1/3/0/2/130272440/lomapegago-wufokof.pdfIn PDF document text
    • http://mindfullyconnectedkids.com/uploads/1/3/0/5/130544321/8062258.pdfIn PDF document text
    • http://thejacksonlawfirmllc.com/uploads/1/3/0/5/130590334/6573452.pdfIn PDF document text
    • http://sportykids.se/uploads/1/3/1/1/131164557/c26d03606f8.pdfIn PDF document text
    • http://ducksnestdecoys.com/uploads/1/3/0/6/130620274/defuleruwupepiguwa.pdfIn PDF document text
    • http://plan7fitnesstesting.com/uploads/1/3/0/5/130588702/6158658cf4fc90.pdfIn PDF document text
    • http://sainteanne-hornaing.fr/uploads/1/3/0/7/130776811/kijuroga.pdfIn PDF document text
    • http://madelinekingkneeland.com/uploads/1/3/0/6/130639428/tuxikiwagajifuxoka.pdfIn PDF document text
    • http://trinitywinchestertn.org/uploads/1/3/0/2/130287269/467951.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 3

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_off00007746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7746 7392 bytes
SHA-256: 13407f404281159629ca21a9e46fe303a7d12ca04d48dc5d222640f0a66a3f34

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