Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ac865317c486c5…

MALICIOUS

PDF

58.4 KB Created: 2020-05-19 09:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 03157d2efdea06b8a75bbdacf023c4d5 SHA-1: 3e78416fe1dc90e0420b9ba34578e7daba48edcc SHA-256: e0ac865317c486c5f7cb7601f7bd7ea112380c7c7627b063dac314ae3b4d820b
96 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, containing numerous external links to other PDF files hosted across various domains. This technique is often used for SEO manipulation or to distribute malicious payloads. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a deliberate attempt to obscure or distribute content via a large number of external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://allmymight.org/uploads/1/3/1/3/131382387/131382387.html#foda+de+cocacola PDF link annotation
    • http://hookahwiz.com/uploads/1/3/1/6/131607805/aac4cf.pdfIn PDF document text
    • http://pattimelfiphotography.com/uploads/1/3/0/6/130621673/d77b8c1b.pdfIn PDF document text
    • http://manamfoundation.org/uploads/1/3/0/5/130541733/kugaguxifegedol_zimaxopenez_lokoge.pdfIn PDF document text
    • http://westchesterbakery.com/uploads/1/3/1/1/131164472/2207672.pdfIn PDF document text
    • http://christbook.org/uploads/1/3/0/7/130775196/dagideb-ritakodiratos-podaji.pdfIn PDF document text
    • http://robertshrigleywoolf.com/uploads/1/3/0/5/130588780/5620592.pdfIn PDF document text
    • http://frizzphysio.com/uploads/1/3/0/7/130775658/jodigu.pdfIn PDF document text
    • http://jaimielindsay.com/uploads/1/3/0/7/130739389/napiwogufomogu-sivamobasuxik-wazarosaval-pazek.pdfIn PDF document text
    • http://viandasana.com/uploads/1/3/0/2/130289417/8771266.pdfIn PDF document text
    • http://walserforcommissioner.com/uploads/1/3/0/5/130590665/mepajezezab.pdfIn PDF document text
    • http://hellofriendrecords.com/uploads/1/3/1/3/131380916/2742772.pdfIn PDF document text
    • http://hybrid-cl.com/uploads/1/3/0/9/130969657/bisekisawazikilu.pdfIn PDF document text
    • http://mylistingedge.com/uploads/1/3/1/0/131070105/9992245.pdfIn PDF document text
    • http://splashesofpaint.com/uploads/1/3/1/4/131452947/mekik.pdfIn PDF document text
    • http://diamondlospoblanos.com/uploads/1/3/1/4/131454482/wugefidademof.pdfIn PDF document text
    • http://evolutionarycompass.com/uploads/1/3/0/2/130287932/1716394.pdfIn PDF document text
    • http://whj.de/uploads/1/3/0/7/130738989/321584.pdfIn PDF document text
    • http://humanrightsekb.ru/uploads/1/3/0/4/130483725/repexofiluf-fubuverefirimu.pdfIn PDF document text
    • http://opencomputehardware.com/uploads/1/3/1/6/131606677/d982e4fae3.pdfIn PDF document text
    • http://flat2goldenlioncourt.com/uploads/1/3/0/7/130739493/8989115.pdfIn PDF document text
    • http://moneypennyandq.com/uploads/1/3/0/5/130550783/lujigubujoz_jinelibuzefo_jegid_jawadusevunese.pdfIn PDF document text
    • http://xiaohuasheng.site/uploads/1/3/0/8/130813860/vuxabazixuziridupot.pdfIn PDF document text
    • http://jbmyersphotography.org/uploads/1/3/0/5/130547275/nuraredenowedop.pdfIn PDF document text
    • http://fulltimeman.com/uploads/1/3/1/6/131637219/2913544.pdfIn PDF document text
    • http://giannidamaia.com/uploads/1/3/0/6/130620222/wadiguvofi_kujaduwebikit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 4

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_off0000b5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EE 11756 bytes
SHA-256: a039682adb2c2a9beb2ee52416a3010cbef50f895f53366ef799c0fc23484f29

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