Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a10d5901c833fb…

MALICIOUS

PDF

44.4 KB Created: 2020-03-25 10:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9f4079006b25dde9156bcb81ca08c368 SHA-1: 3284c65b0baa9a51af2a2823b59a513880e90c10 SHA-256: 05a10d5901c833fbdbedd7afa5007ba6eb2c199c4a169eb589b096eb0bf1662d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, indicating a potential link farm or redirection to malicious sites. The document body contains text related to steel rigidity and authoring application details, but the primary malicious activity appears to be the mass distribution of external URLs. No scripts were extracted, limiting further analysis of specific payloads.

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://newstylemarket.com/uploads/1/3/0/5/130551124/130551124.html#modulo+de+rigidez+del+acero+4140
    • http://superiorclean.org/uploads/1/3/1/1/131164054/tezedefomawokeresiti.pdf
    • http://webmail.weebee.co/uploads/1/3/0/3/130313173/2121040.pdf
    • http://www.orlandosanchezfilms.net/uploads/1/3/0/4/130493248/4830544.pdf
    • http://amusethemeparks.com/uploads/1/3/0/4/130483350/6257019.pdf
    • http://jhonblack.org/uploads/1/3/0/6/130639321/bolijosalit.pdf
    • http://martinaia.net/uploads/1/3/1/1/131163533/7424228.pdf
    • http://drawndialogues.com/uploads/1/3/0/6/130604304/4479493.pdf
    • http://comfortcottageohio.com/uploads/1/3/0/3/130313067/fb49dcb3abb10c.pdf
    • http://ambertraina.com/uploads/1/3/0/7/130775607/xiwala-kegodakij-mexawukujomobu.pdf
    • http://ttrgi.org/uploads/1/3/0/6/130621703/gisedaweral.pdf
    • http://medicalschoolaid.com/uploads/1/3/0/7/130775796/728107.pdf
    • http://desertcharmweddingcoordination.com/uploads/1/3/0/7/130776852/2607955.pdf
    • http://rsdbllc.com/uploads/1/3/0/3/130323630/6561312.pdf
    • http://www.linakwon3.com/uploads/1/3/0/5/130588805/7079867.pdf
    • http://nursinghomepj.com/uploads/1/3/0/6/130604321/kuximisu.pdf
    • http://pilatesandyogawithsharon.com/uploads/1/3/0/8/130813917/8608980.pdf
    • http://hapicos.com/uploads/1/3/0/2/130288563/3581817.pdf
    • http://bellbookcandle.net/uploads/1/3/0/6/130604502/jifazosibavew-sufimurugijes-japedatu-moputukasiwuz.pdf
    • http://futurelab.technology/uploads/1/3/0/6/130605080/0ab131c9caa7761.pdf
    • http://www.madwhitdesigns.com/uploads/1/3/0/5/130590477/tapudes.pdf
    • http://www.crystalplaceltd.co.uk/uploads/1/3/0/5/130542718/9523831.pdf
    • http://nblbball.com/uploads/1/3/0/5/130589094/xulunaw_tipodolekule_tedajozi.pdf
    • http://mymamaisasocialworker.com/uploads/1/3/0/2/130270990/fb0ee711beca580.pdf
    • http://greatamericanfoodsinc.net/uploads/1/3/0/6/130621730/484789.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_off000080dc.bin
bb48c6ec4a5b8c85cfd62a9cacb639255c4e7e55c17aecd81db964585938de1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80DC 9136 bytes

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